--- a/tests/test-extension-timing.t	Wed Mar 25 20:33:15 2020 +0530
+++ b/tests/test-extension-timing.t	Wed Mar 25 20:15:57 2020 +0530
@@ -1,3 +1,5 @@
+#require no-chg
+
 Test basic extension support
 
   $ cat > foobar.py <<EOF