--- a/mercurial/policy.py	Wed Sep 05 22:10:41 2018 +0900
+++ b/mercurial/policy.py	Wed Sep 05 20:52:22 2018 +0900
@@ -69,7 +69,7 @@
     (r'cext', r'bdiff'): 3,
     (r'cext', r'mpatch'): 1,
     (r'cext', r'osutil'): 4,
-    (r'cext', r'parsers'): 5,
+    (r'cext', r'parsers'): 10,
 }
 
 # map import request to other package or module