diff --git a/jsonobject/api.c b/jsonobject/api.c
index f408ade..01a0070 100644
--- a/jsonobject/api.c
+++ b/jsonobject/api.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1150,18 +1154,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -1921,7 +1925,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 }
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -2168,7 +2172,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -3209,7 +3213,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -4172,9 +4176,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -4249,7 +4258,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -4392,7 +4404,7 @@ static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -4739,7 +4751,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -4935,7 +4947,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
diff --git a/jsonobject/base.c b/jsonobject/base.c
index f61a9d9..1c64086 100644
--- a/jsonobject/base.c
+++ b/jsonobject/base.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1167,18 +1171,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -11473,7 +11477,7 @@ static PyTypeObject __pyx_type_10jsonobject_4base___pyx_scope_struct____repr__ =
   #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
   0, /*tp_print*/
   #endif
-  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
 };
@@ -11586,7 +11590,7 @@ static PyTypeObject __pyx_type_10jsonobject_4base___pyx_scope_struct_1_genexpr =
   #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
   0, /*tp_print*/
   #endif
-  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
 };
@@ -11703,7 +11707,7 @@ static PyTypeObject __pyx_type_10jsonobject_4base___pyx_scope_struct_2_genexpr =
   #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
   0, /*tp_print*/
   #endif
-  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
 };
@@ -12463,7 +12467,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
   __pyx_umethod_PyDict_Type_items.type = (PyObject*)&PyDict_Type;
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -12735,7 +12739,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -14045,7 +14049,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -14458,10 +14462,8 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         Py_DECREF(retval);
         __Pyx_RaiseTooManyValuesError(expected);
         return -1;
-    } else {
-        return __Pyx_IterFinish();
     }
-    return 0;
+    return __Pyx_IterFinish();
 }
 
 /* GetItemInt */
@@ -14554,7 +14556,7 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
 /* ObjectGetItem */
 #if CYTHON_USE_TYPE_SLOTS
 static PyObject *__Pyx_PyObject_GetIndex(PyObject *obj, PyObject* index) {
-    PyObject *runerr;
+    PyObject *runerr = NULL;
     Py_ssize_t key_value;
     PySequenceMethods *m = Py_TYPE(obj)->tp_as_sequence;
     if (unlikely(!(m && m->sq_item))) {
@@ -14894,13 +14896,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     }
     PyErr_SetObject(type, value);
     if (tb) {
-#if CYTHON_COMPILING_IN_PYPY
-        PyObject *tmp_type, *tmp_value, *tmp_tb;
-        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
-        Py_INCREF(tb);
-        PyErr_Restore(tmp_type, tmp_value, tb);
-        Py_XDECREF(tmp_tb);
-#else
+#if CYTHON_FAST_THREAD_STATE
         PyThreadState *tstate = __Pyx_PyThreadState_Current;
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -14908,6 +14904,12 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#else
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
 #endif
     }
 bad:
@@ -16022,9 +16024,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -16099,7 +16106,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -16259,7 +16269,7 @@ static PyObject* __Pyx_Method_ClassMethod(PyObject *method) {
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -16606,7 +16616,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -16802,7 +16812,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -18031,7 +18041,10 @@ static PyTypeObject __pyx_GeneratorType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
diff --git a/jsonobject/base_properties.c b/jsonobject/base_properties.c
index f8bfcd9..de4cb0e 100644
--- a/jsonobject/base_properties.c
+++ b/jsonobject/base_properties.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1352,18 +1356,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -10367,7 +10371,7 @@ static PyTypeObject __pyx_type_10jsonobject_15base_properties___pyx_scope_struct
   #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
   0, /*tp_print*/
   #endif
-  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
 };
@@ -11052,7 +11056,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 }
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -11307,7 +11311,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -12868,9 +12872,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -12945,7 +12954,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -13049,10 +13061,8 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         Py_DECREF(retval);
         __Pyx_RaiseTooManyValuesError(expected);
         return -1;
-    } else {
-        return __Pyx_IterFinish();
     }
-    return 0;
+    return __Pyx_IterFinish();
 }
 
 /* PyCFunctionFastCall */
@@ -13441,7 +13451,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -13616,13 +13626,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     }
     PyErr_SetObject(type, value);
     if (tb) {
-#if CYTHON_COMPILING_IN_PYPY
-        PyObject *tmp_type, *tmp_value, *tmp_tb;
-        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
-        Py_INCREF(tb);
-        PyErr_Restore(tmp_type, tmp_value, tb);
-        Py_XDECREF(tmp_tb);
-#else
+#if CYTHON_FAST_THREAD_STATE
         PyThreadState *tstate = __Pyx_PyThreadState_Current;
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -13630,6 +13634,12 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#else
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
 #endif
     }
 bad:
@@ -13728,7 +13738,7 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
 /* ObjectGetItem */
 #if CYTHON_USE_TYPE_SLOTS
 static PyObject *__Pyx_PyObject_GetIndex(PyObject *obj, PyObject* index) {
-    PyObject *runerr;
+    PyObject *runerr = NULL;
     Py_ssize_t key_value;
     PySequenceMethods *m = Py_TYPE(obj)->tp_as_sequence;
     if (unlikely(!(m && m->sq_item))) {
@@ -14293,7 +14303,7 @@ static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObj
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -14640,7 +14650,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -14836,7 +14846,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
diff --git a/jsonobject/containers.c b/jsonobject/containers.c
index 67c2fc4..6f0fda2 100644
--- a/jsonobject/containers.c
+++ b/jsonobject/containers.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1141,18 +1145,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -10331,20 +10335,20 @@ static PyObject *__pyx_pf_10jsonobject_10containers_7JsonSet_10pop(CYTHON_UNUSED
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __pyx_t_7 = Py_TYPE(__pyx_t_6)->tp_iternext;
-    index = 0; __pyx_t_5 = __pyx_t_7(__pyx_t_6); if (unlikely(!__pyx_t_5)) goto __pyx_L6_unpacking_failed;
+    index = 0; __pyx_t_5 = __pyx_t_7(__pyx_t_6); if (unlikely(!__pyx_t_5)) goto __pyx_L7_unpacking_failed;
     __Pyx_GOTREF(__pyx_t_5);
-    index = 1; __pyx_t_4 = __pyx_t_7(__pyx_t_6); if (unlikely(!__pyx_t_4)) goto __pyx_L6_unpacking_failed;
+    index = 1; __pyx_t_4 = __pyx_t_7(__pyx_t_6); if (unlikely(!__pyx_t_4)) goto __pyx_L7_unpacking_failed;
     __Pyx_GOTREF(__pyx_t_4);
     if (__Pyx_IternextUnpackEndCheck(__pyx_t_7(__pyx_t_6), 2) < 0) __PYX_ERR(0, 223, __pyx_L1_error)
     __pyx_t_7 = NULL;
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    goto __pyx_L7_unpacking_done;
-    __pyx_L6_unpacking_failed:;
+    goto __pyx_L8_unpacking_done;
+    __pyx_L7_unpacking_failed:;
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     __pyx_t_7 = NULL;
     if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
     __PYX_ERR(0, 223, __pyx_L1_error)
-    __pyx_L7_unpacking_done:;
+    __pyx_L8_unpacking_done:;
   }
   __pyx_v_wrapped_ = __pyx_t_5;
   __pyx_t_5 = 0;
@@ -12126,7 +12130,7 @@ static PyTypeObject __pyx_type_10jsonobject_10containers___pyx_scope_struct__sor
   #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
   0, /*tp_print*/
   #endif
-  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+  #if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
   0, /*tp_pypy_flags*/
   #endif
 };
@@ -12843,7 +12847,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
   __pyx_umethod_PyList_Type_pop.type = (PyObject*)&PyList_Type;
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_0 = PyInt_FromLong(0); if (unlikely(!__pyx_int_0)) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_1 = PyInt_FromLong(1); if (unlikely(!__pyx_int_1)) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_neg_1 = PyInt_FromLong(-1); if (unlikely(!__pyx_int_neg_1)) __PYX_ERR(0, 1, __pyx_L1_error)
@@ -13100,7 +13104,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -14257,7 +14261,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -14535,10 +14539,8 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         Py_DECREF(retval);
         __Pyx_RaiseTooManyValuesError(expected);
         return -1;
-    } else {
-        return __Pyx_IterFinish();
     }
-    return 0;
+    return __Pyx_IterFinish();
 }
 
 /* None */
@@ -15169,9 +15171,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -15246,7 +15253,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -15653,13 +15663,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     }
     PyErr_SetObject(type, value);
     if (tb) {
-#if CYTHON_COMPILING_IN_PYPY
-        PyObject *tmp_type, *tmp_value, *tmp_tb;
-        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
-        Py_INCREF(tb);
-        PyErr_Restore(tmp_type, tmp_value, tb);
-        Py_XDECREF(tmp_tb);
-#else
+#if CYTHON_FAST_THREAD_STATE
         PyThreadState *tstate = __Pyx_PyThreadState_Current;
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -15667,6 +15671,12 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#else
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
 #endif
     }
 bad:
@@ -16004,7 +16014,7 @@ static int __Pyx_CyFunction_InitClassCell(PyObject *cyfunctions, PyObject *class
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -16351,7 +16361,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -16547,7 +16557,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
diff --git a/jsonobject/properties.c b/jsonobject/properties.c
index 2f946c1..80a1b0c 100644
--- a/jsonobject/properties.c
+++ b/jsonobject/properties.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1081,18 +1085,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -6016,7 +6020,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 }
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_0 = PyInt_FromLong(0); if (unlikely(!__pyx_int_0)) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_1 = PyInt_FromLong(1); if (unlikely(!__pyx_int_1)) __PYX_ERR(0, 1, __pyx_L1_error)
   __pyx_int_3 = PyInt_FromLong(3); if (unlikely(!__pyx_int_3)) __PYX_ERR(0, 1, __pyx_L1_error)
@@ -6262,7 +6266,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -8258,13 +8262,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     }
     PyErr_SetObject(type, value);
     if (tb) {
-#if CYTHON_COMPILING_IN_PYPY
-        PyObject *tmp_type, *tmp_value, *tmp_tb;
-        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
-        Py_INCREF(tb);
-        PyErr_Restore(tmp_type, tmp_value, tb);
-        Py_XDECREF(tmp_tb);
-#else
+#if CYTHON_FAST_THREAD_STATE
         PyThreadState *tstate = __Pyx_PyThreadState_Current;
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -8272,6 +8270,12 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#else
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
 #endif
     }
 bad:
@@ -8288,7 +8292,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -9153,9 +9157,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -9230,7 +9239,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -9349,7 +9361,7 @@ static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObj
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -9696,7 +9708,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -9892,7 +9904,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
diff --git a/jsonobject/utils.c b/jsonobject/utils.c
index 1f77fed..9823274 100644
--- a/jsonobject/utils.c
+++ b/jsonobject/utils.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29.32 */
+/* Generated by Cython 0.29.35 */
 
 /* BEGIN: Cython Metadata
 {
@@ -21,8 +21,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29_32"
-#define CYTHON_HEX_VERSION 0x001D20F0
+#define CYTHON_ABI "0_29_35"
+#define CYTHON_HEX_VERSION 0x001D23F0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -90,8 +90,12 @@ END: Cython Metadata */
   #define CYTHON_FAST_THREAD_STATE 0
   #undef CYTHON_FAST_PYCALL
   #define CYTHON_FAST_PYCALL 0
-  #undef CYTHON_PEP489_MULTI_PHASE_INIT
-  #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #if PY_VERSION_HEX < 0x03090000
+    #undef CYTHON_PEP489_MULTI_PHASE_INIT
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 0
+  #elif !defined(CYTHON_PEP489_MULTI_PHASE_INIT)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT 1
+  #endif
   #undef CYTHON_USE_TP_FINALIZE
   #define CYTHON_USE_TP_FINALIZE 0
   #undef CYTHON_USE_DICT_VERSIONS
@@ -99,7 +103,7 @@ END: Cython Metadata */
   #undef CYTHON_USE_EXC_INFO_STACK
   #define CYTHON_USE_EXC_INFO_STACK 0
   #ifndef CYTHON_UPDATE_DESCRIPTOR_DOC
-    #define CYTHON_UPDATE_DESCRIPTOR_DOC (PYPY_VERSION_HEX >= 0x07030900)
+    #define CYTHON_UPDATE_DESCRIPTOR_DOC 0
   #endif
 #elif defined(PYSTON_VERSION)
   #define CYTHON_COMPILING_IN_PYPY 0
@@ -215,7 +219,7 @@ END: Cython Metadata */
     #undef CYTHON_USE_PYLONG_INTERNALS
     #define CYTHON_USE_PYLONG_INTERNALS 0
   #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
-    #define CYTHON_USE_PYLONG_INTERNALS 1
+    #define CYTHON_USE_PYLONG_INTERNALS (PY_VERSION_HEX < 0x030C00A5)
   #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
@@ -254,7 +258,7 @@ END: Cython Metadata */
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
   #endif
   #ifndef CYTHON_USE_DICT_VERSIONS
-    #define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
+    #define CYTHON_USE_DICT_VERSIONS ((PY_VERSION_HEX >= 0x030600B1) && (PY_VERSION_HEX < 0x030C00A5))
   #endif
   #if PY_VERSION_HEX >= 0x030B00A4
     #undef CYTHON_USE_EXC_INFO_STACK
@@ -564,11 +568,11 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
 #endif
 #if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #if defined(PyUnicode_IS_READY)
-  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
-                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_READY(op)       (0)
   #else
-  #define __Pyx_PyUnicode_READY(op)       (0)
+    #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ?\
+                                                0 : _PyUnicode_Ready((PyObject *)(op)))
   #endif
   #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
@@ -577,14 +581,14 @@ static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   #define __Pyx_PyUnicode_DATA(u)         PyUnicode_DATA(u)
   #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
   #define __Pyx_PyUnicode_WRITE(k, d, i, ch)  PyUnicode_WRITE(k, d, i, ch)
-  #if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
-  #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
-  #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
-  #endif
+  #if PY_VERSION_HEX >= 0x030C0000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
   #else
-  #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != PyUnicode_GET_LENGTH(u))
+    #if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
+    #else
+    #define __Pyx_PyUnicode_IS_TRUE(u)      (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
+    #endif
   #endif
 #else
   #define CYTHON_PEP393_ENABLED 0
@@ -1141,18 +1145,18 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
+#define __Pyx_GetModuleGlobalName(var, name)  do {\
     static PY_UINT64_T __pyx_dict_version = 0;\
     static PyObject *__pyx_dict_cached_value = NULL;\
     (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
         (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
         __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
+} while(0)
+#define __Pyx_GetModuleGlobalNameUncached(var, name)  do {\
     PY_UINT64_T __pyx_dict_version;\
     PyObject *__pyx_dict_cached_value;\
     (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
+} while(0)
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
 #else
 #define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
@@ -3314,7 +3318,7 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
 }
 
 static CYTHON_SMALL_CODE int __Pyx_InitGlobals(void) {
-  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (__Pyx_InitStrings(__pyx_string_tab) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -3553,7 +3557,7 @@ if (!__Pyx_RefNanny) {
   Py_INCREF(__pyx_b);
   __pyx_cython_runtime = PyImport_AddModule((char *) "cython_runtime"); if (unlikely(!__pyx_cython_runtime)) __PYX_ERR(0, 1, __pyx_L1_error)
   Py_INCREF(__pyx_cython_runtime);
-  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error);
+  if (PyObject_SetAttrString(__pyx_m, "__builtins__", __pyx_b) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   /*--- Initialize various global constants etc. ---*/
   if (__Pyx_InitGlobals() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
   #if PY_MAJOR_VERSION < 3 && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
@@ -4105,7 +4109,7 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
         return __Pyx_PyFunction_FastCall(func, NULL, 0);
     }
 #endif
-#ifdef __Pyx_CyFunction_USED
+#if defined(__Pyx_CyFunction_USED) && defined(NDEBUG)
     if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
     if (likely(PyCFunction_Check(func)))
@@ -4433,13 +4437,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     }
     PyErr_SetObject(type, value);
     if (tb) {
-#if CYTHON_COMPILING_IN_PYPY
-        PyObject *tmp_type, *tmp_value, *tmp_tb;
-        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
-        Py_INCREF(tb);
-        PyErr_Restore(tmp_type, tmp_value, tb);
-        Py_XDECREF(tmp_tb);
-#else
+#if CYTHON_FAST_THREAD_STATE
         PyThreadState *tstate = __Pyx_PyThreadState_Current;
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -4447,6 +4445,12 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#else
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
 #endif
     }
 bad:
@@ -4509,10 +4513,8 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         Py_DECREF(retval);
         __Pyx_RaiseTooManyValuesError(expected);
         return -1;
-    } else {
-        return __Pyx_IterFinish();
     }
-    return 0;
+    return __Pyx_IterFinish();
 }
 
 /* GetItemInt */
@@ -4605,7 +4607,7 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
 /* ObjectGetItem */
 #if CYTHON_USE_TYPE_SLOTS
 static PyObject *__Pyx_PyObject_GetIndex(PyObject *obj, PyObject* index) {
-    PyObject *runerr;
+    PyObject *runerr = NULL;
     Py_ssize_t key_value;
     PySequenceMethods *m = Py_TYPE(obj)->tp_as_sequence;
     if (unlikely(!(m && m->sq_item))) {
@@ -5440,9 +5442,14 @@ static PyObject *__Pyx_CyFunction_CallAsMethod(PyObject *func, PyObject *args, P
         self = PyTuple_GetItem(args, 0);
         if (unlikely(!self)) {
             Py_DECREF(new_args);
+#if PY_MAJOR_VERSION > 2
             PyErr_Format(PyExc_TypeError,
                          "unbound method %.200S() needs an argument",
                          cyfunc->func_qualname);
+#else
+            PyErr_SetString(PyExc_TypeError,
+                            "unbound method needs an argument");
+#endif
             return NULL;
         }
         result = __Pyx_CyFunction_CallMethod(func, self, new_args, kw);
@@ -5517,7 +5524,10 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
     0,
 #endif
-#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000
+#if PY_VERSION_HEX >= 0x030C0000
+    0,
+#endif
+#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX >= 0x03090000 && PY_VERSION_HEX < 0x030a0000
     0,
 #endif
 };
@@ -5636,7 +5646,7 @@ static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObj
 
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
-static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
+static int __Pyx_CLineForTraceback(CYTHON_UNUSED PyThreadState *tstate, int c_line) {
     PyObject *use_cline;
     PyObject *ptype, *pvalue, *ptraceback;
 #if CYTHON_COMPILING_IN_CPYTHON
@@ -5983,7 +5993,7 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }
@@ -6179,7 +6189,7 @@ static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
                     break;
             }
 #endif
-#if CYTHON_COMPILING_IN_CPYTHON
+#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030C00A7
             if (unlikely(Py_SIZE(x) < 0)) {
                 goto raise_neg_overflow;
             }