diff --git a/Tools/cystdlib.py b/Tools/cystdlib.py
index 8e16eae78bce10029f11e5f1fabefc300d027e8e..c57122fa9b21370b52e99fd1e52485f5843094ed 100644
--- a/Tools/cystdlib.py
+++ b/Tools/cystdlib.py
@@ -33,6 +33,8 @@ broken = [
     'traceback.py',
     'types.py',
     'enum.py',
+    'keyword.py',
+    '_collections_abc.py',
     'importlib/_bootstrap',
 ]