diff --git a/hpy/devel/__init__.py b/hpy/devel/__init__.py
index 3b7f6e6d..555c9ef4 100644
--- a/hpy/devel/__init__.py
+++ b/hpy/devel/__init__.py
@@ -203,14 +203,21 @@ def handle_hpy_ext_modules(dist, attr, hpy_ext_modules):
 # This file is automatically generated by hpy
 
 def __bootstrap__():
-
-    from sys import modules
+    from sys import modules, version_info
     from os import environ
-    from pkg_resources import resource_filename
+    from contextlib import nullcontext
+    from importlib import resources
+
     from hpy.universal import _load_bootstrap
-    ext_filepath = resource_filename(__name__, {ext_file!r})
-    m = _load_bootstrap({module_name!r}, __name__, __package__, ext_filepath,
-                        __loader__, __spec__, environ)
+
+    if version_info < (3, 9):
+        ctx = resources.path(__package__, {ext_file!r})
+    else:
+        ctx = nullcontext(resources.files(__package__).joinpath({ext_file!r}))
+
+    with ctx as ext_filepath:
+        m = _load_bootstrap({module_name!r}, __name__, __package__, str(ext_filepath),
+                            __loader__, __spec__, environ)
     modules[__name__] = m
 
 __bootstrap__()