diff --git a/Tools/msi/msi.py b/Tools/msi/msi.py
index 64f33290f4b..6665d363802 100644
--- a/Tools/msi/msi.py
+++ b/Tools/msi/msi.py
@@ -108,6 +108,8 @@ extensions = [
     '_testcapi.pyd',
     '_tkinter.pyd',
     '_msi.pyd',
+    '_ctypes.pyd',
+    '_ctypes_test.pyd'
 ]
 
 if major+minor <= "24":