diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-01-14-20-55-34.bpo-46383.v8MTl4.rst b/Misc/NEWS.d/next/Core and Builtins/2022-01-14-20-55-34.bpo-46383.v8MTl4.rst
new file mode 100644
index 00000000000..8f8b12732a6
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-01-14-20-55-34.bpo-46383.v8MTl4.rst	
@@ -0,0 +1,2 @@
+Fix invalid signature of ``_zoneinfo``'s ``module_free`` function to resolve
+a crash on wasm32-emscripten platform.
diff --git a/Modules/_zoneinfo.c b/Modules/_zoneinfo.c
index d7945d31aff..cd147aedb4c 100644
--- a/Modules/_zoneinfo.c
+++ b/Modules/_zoneinfo.c
@@ -2613,7 +2613,7 @@ static PyTypeObject PyZoneInfo_ZoneInfoType = {
 // Specify the _zoneinfo module
 static PyMethodDef module_methods[] = {{NULL, NULL}};
 static void
-module_free()
+module_free(void *m)
 {
     Py_XDECREF(_tzpath_find_tzfile);
     _tzpath_find_tzfile = NULL;