diff --git a/.hgtags b/.hgtags
index bad502d..0b6b2fd 100644
--- a/.hgtags
+++ b/.hgtags
@@ -54,3 +54,4 @@ d6d3085307d8d98b8b012b669e858fd787befeb1 4.7
 607015ddb091d49cbd3457af41713691aa69f4d6 4.8
 22c669b2dd3673785c3476b9976da21e8783f745 4.9
 06eb9644e2dad7667d97495eb7d7bc62aa0429e8 5.0
+ce355cea9bb89e162f61913737a46908cdfa7e45 5.1