diff --git a/Modules/clinic/overlapped.c.h b/Modules/clinic/overlapped.c.h
index 1c216633eb95f0..a8dc9b2a5de65f 100644
--- a/Modules/clinic/overlapped.c.h
+++ b/Modules/clinic/overlapped.c.h
@@ -37,7 +37,7 @@ _overlapped_CreateIoCompletionPort(PyObject *module, PyObject *const *args, Py_s
     if (!ExistingCompletionPort && PyErr_Occurred()) {
         goto exit;
     }
-    CompletionKey = (uintptr_t)PyLong_AsVoidPtr(args[2]);
+    CompletionKey = PyLong_AsUintptr_t(args[2]);
     if (!CompletionKey && PyErr_Occurred()) {
         goto exit;
     }
@@ -124,7 +124,7 @@ _overlapped_PostQueuedCompletionStatus(PyObject *module, PyObject *const *args,
     if (!_PyLong_UnsignedLong_Converter(args[1], &NumberOfBytes)) {
         goto exit;
     }
-    CompletionKey = (uintptr_t)PyLong_AsVoidPtr(args[2]);
+    CompletionKey = PyLong_AsUintptr_t(args[2]);
     if (!CompletionKey && PyErr_Occurred()) {
         goto exit;
     }
@@ -1225,4 +1225,4 @@ _overlapped_Overlapped_WSARecvFromInto(OverlappedObject *self, PyObject *const *
 
     return return_value;
 }
-/*[clinic end generated code: output=edd05b7a6c9c3aac input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c92ad5ebfe07371f input=a9049054013a1b77]*/
diff --git a/Modules/overlapped.c b/Modules/overlapped.c
index 369b1beae84e3f..a36cdf70782c64 100644
--- a/Modules/overlapped.c
+++ b/Modules/overlapped.c
@@ -54,7 +54,7 @@ class ULONG_PTR_converter(pointer_converter):
 
     def parse_arg(self, argname, displayname):
         return """
-            {paramname} = (uintptr_t)PyLong_AsVoidPtr({argname});
+            {paramname} = PyLong_AsUintptr_t({argname});
             if (!{paramname} && PyErr_Occurred()) {{{{
                 goto exit;
             }}}}
@@ -66,7 +66,7 @@ class DWORD_converter(unsigned_long_converter):
 class BOOL_converter(int_converter):
     type = 'BOOL'
 [python start generated code]*/
-/*[python end generated code: output=da39a3ee5e6b4b0d input=8a07ea3018f4cec8]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=4f13bfc8e0686699]*/
 
 /*[clinic input]
 module _overlapped