diff --git a/dtool/src/pystub/pystub.cxx b/dtool/src/pystub/pystub.cxx
index 58a74f653c..598da7546f 100644
--- a/dtool/src/pystub/pystub.cxx
+++ b/dtool/src/pystub/pystub.cxx
@@ -34,6 +34,7 @@ extern "C" {
   EXPCL_DTOOLCONFIG int PyList_AsTuple(...);
   EXPCL_DTOOLCONFIG int PyList_New(...);
   EXPCL_DTOOLCONFIG int PyLong_AsLongLong(...);
+  EXPCL_DTOOLCONFIG int PyLong_AsUnsignedLong(...);
   EXPCL_DTOOLCONFIG int PyLong_AsUnsignedLongLong(...);
   EXPCL_DTOOLCONFIG int PyLong_FromLongLong(...);
   EXPCL_DTOOLCONFIG int PyLong_FromUnsignedLong(...);
@@ -101,6 +102,7 @@ int PyList_Append(...) { return 0; }
 int PyList_AsTuple(...) { return 0; }
 int PyList_New(...) { return 0; }
 int PyLong_AsLongLong(...) { return 0; }
+int PyLong_AsUnsignedLong(...) { return 0; }
 int PyLong_AsUnsignedLongLong(...) { return 0; }
 int PyLong_FromLongLong(...) { return 0; }
 int PyLong_FromUnsignedLong(...) { return 0; }