diff --git a/src/py2app/bootstrap/setup_included_subpackages.py b/src/py2app/bootstrap/setup_included_subpackages.py
index d9ca8f6e..553a87ad 100644
--- a/src/py2app/bootstrap/setup_included_subpackages.py
+++ b/src/py2app/bootstrap/setup_included_subpackages.py
@@ -5,6 +5,9 @@
 import sys
 import types
 
+from importlib._bootstrap import _exec, _load
+from importlib import machinery, util
+
 _path_hooks: "list[str]"
 
 
@@ -19,9 +22,22 @@ def load_module(self, fullname: str) -> types.ModuleType:
         pkg_dir = os.path.join(
             os.environ["RESOURCEPATH"], "lib", "python%d.%d" % (sys.version_info[:2])
         )
-        return imp.load_module(
-            fullname, None, os.path.join(pkg_dir, fullname), ("", "", imp.PKG_DIRECTORY)
-        )
+        path = os.path.join(pkg_dir, fullname)
+        if os.path.isdir(path):
+            extensions = (machinery.SOURCE_SUFFIXES[:] +
+                          machinery.BYTECODE_SUFFIXES[:])
+            for extension in extensions:
+                init_path = os.path.join(path, '__init__' + extension)
+                if os.path.exists(init_path):
+                    path = init_path
+                    break
+            else:
+                raise ValueError('{!r} is not a package'.format(path))
+        spec = util.spec_from_file_location(fullname, path, submodule_search_locations=[])
+        if fullname in sys.modules:
+            return _exec(spec, sys.modules[fullname])
+        else:
+            return _load(spec)
 
 
 class Finder:
diff --git a/src/py2app/build_app.py b/src/py2app/build_app.py
index ec68dcdf..affd56d0 100644
--- a/src/py2app/build_app.py
+++ b/src/py2app/build_app.py
@@ -7,7 +7,7 @@
 # mypy: ignore-errors
 
 import collections
-import imp
+import importlib.machinery
 import io
 import itertools
 import os
@@ -1769,9 +1769,7 @@ def copy_package_data(
         This is a bit of a hack, it would be better to identify python eggs
         and copy those in whole.
         """
-        exts = [i[0] for i in imp.get_suffixes()]
-        exts.append(".py")
-        exts.append(".pyc")
+        exts = importlib.machinery.all_suffixes()
         exts.append(".pyo")
 
         def datafilter(item: str) -> bool:
diff --git a/src/py2app/recipes/virtualenv.py b/src/py2app/recipes/virtualenv.py
index d796ab15..b1c8a0be 100644
--- a/src/py2app/recipes/virtualenv.py
+++ b/src/py2app/recipes/virtualenv.py
@@ -8,7 +8,6 @@
 good model for other recipes!!!
 """
 
-import imp
 import os
 import sys
 import typing
@@ -50,7 +49,7 @@ def fmod(
     ]:
         if path is None:
             if name in sys.builtin_module_names:
-                return (None, None, ("", "", imp.C_BUILTIN))
+                return (None, None, ("", "", 6))  # imp.C_BUILTIN
 
             path = mf.path
 
@@ -66,9 +65,9 @@ def fmod(
     except ImportError:
         return None
 
-    if stuff[-1] == imp.PKG_DIRECTORY:
+    if stuff[-1] == 5:  # imp.PKG_DIRECTORY
         m.__class__ = Package
-    elif stuff[-1] == imp.PY_SOURCE:
+    elif stuff[-1] == 1:  # imp.PY_SOURCE
         m.__class__ = SourceModule
     else:
         m.__class__ = CompiledModule
diff --git a/src/py2app/util.py b/src/py2app/util.py
index 24682a5c..43e7517e 100644
--- a/src/py2app/util.py
+++ b/src/py2app/util.py
@@ -13,6 +13,9 @@
 import typing
 from py_compile import compile  # noqa: A004
 
+from importlib._bootstrap import _load
+import importlib.machinery
+
 import macholib.util
 from macholib.util import is_platform_file
 from modulegraph import zipio
@@ -317,7 +320,9 @@ def __load():
             continue
         ext_path = os.path.join(path, ext)
         if os.path.exists(ext_path):
-            mod = imp.load_dynamic(__name__, ext_path)
+            loader = importlib.machinery.ExtensionFileLoader(__name__, ext_path)
+            spec = importlib.machinery.ModuleSpec(name=__name__, loader=loader, origin=ext_path)
+            mod = _load(spec)
             break
     else:
         raise ImportError(repr(ext) + " not found")