diff --git a/CHANGES b/CHANGES
index 6510db17..b0117aec 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,10 @@
 LablGTK changes log
 
+In Lablgtk-2.18.14:
+
+2023.11.13 [Jacques]
+  * Fix use of String.create in lablgladecc (not available in ocaml 5.0)
+
 2023.04.06 [Jacques]
   * Fix a typo in the Makefile that breaks the build with newer GNU make (#168)
     [Brad Smith]
diff --git a/README b/README
index fafb9fa5..f80fd8da 100755
--- a/README
+++ b/README
@@ -1,8 +1,8 @@
 
-             LablGTK2 2.18.13 : an interface to the GIMP Tool Kit
+             LablGTK2 2.18.14 : an interface to the GIMP Tool Kit
 
 Needed:
-        ocaml-4.06 or more (including 5.0)
+        ocaml-4.06 or more (including 5.0 and 5.1)
         camlp-streams (for OCaml 5.0 or later)
         gtk+-2.x (gtk+-2.16.x for full functionality)
         findlib 1.2.1 or more (for default install)
diff --git a/src/Makefile b/src/Makefile
index 3052aa14..de159d17 100755
--- a/src/Makefile
+++ b/src/Makefile
@@ -541,8 +541,8 @@ varcc$(XE): varcc.ml
 propcc$(XE): propcc.ml
 	$(LINKER) $(STREAMSLINK) -o $@ $<
 
-check_externals$(XE): check_externals.cmo
-	$(LINKER) -o $@ $<
+check_externals$(XE): check_externals.ml
+	$(LINKER) $(STREAMSLINK) -o $@ $<
 
 clean:
 	rm -f *.cm* *.o *.a *.so *.exe *.obj *.lib *.dll *_tags.[ch] *.gch \
diff --git a/src/check_externals.ml b/src/check_externals.ml
index c898c0da..834c34dd 100644
--- a/src/check_externals.ml
+++ b/src/check_externals.ml
@@ -15,8 +15,9 @@ type token =
   | EOF
 
 let rec implode l =
-  let s = String.create (List.length l) in
-  let i = ref 0 in List.iter l ~f:(fun c -> s.[!i] <- c; incr i); s
+  let s = Bytes.create (List.length l) in
+  let i = ref 0 in List.iter l ~f:(fun c -> Bytes.set s !i c; incr i);
+  Bytes.to_string s
 
 let rec skip tok (strm__ : _ Stream.t) =
   match Stream.peek strm__ with
diff --git a/src/check_externals.ml4 b/src/check_externals.ml4
index 96472b23..4fcadf22 100644
--- a/src/check_externals.ml4
+++ b/src/check_externals.ml4
@@ -15,10 +15,10 @@ type token =
   | EOF
 
 let rec implode l =
-  let s = String.create (List.length l) in
+  let s = Bytes.create (List.length l) in
   let i = ref 0 in
-  List.iter l ~f:(fun c -> s.[!i] <- c; incr i);
-  s
+  List.iter l ~f:(fun c -> Bytes.set s !i c; incr i);
+  Bytes.to_string s
 
 let rec skip tok = parser [< ' tok' ; s >] -> if tok <> tok' then skip tok s
 
diff --git a/src/lablgladecc.ml b/src/lablgladecc.ml
index ba7e0e2b..43607dc8 100644
--- a/src/lablgladecc.ml
+++ b/src/lablgladecc.ml
@@ -352,7 +352,7 @@ let process ?(file="<stdin>") chan =
   let lexbuf, data =
     if !embed then begin
       let b = Buffer.create 1024 in
-      let buf = String.create 1024 in
+      let buf = Bytes.create 1024 in
       while
         let len = input chan buf 0 1024 in
         Buffer.add_subbytes b buf 0 len;