diff --git a/.hgtags b/.hgtags
index 1b2656857..d6477c01b 100644
--- a/.hgtags
+++ b/.hgtags
@@ -426,3 +426,4 @@ fb1212c7eca4c5328fe17d6cd95b010c67336aac release-1.13.9
 64179f242cb55fc206bca59de9bfdc4cf5ebcec7 release-1.13.11
 051e5fa03b92b8a564f6b12debd483d267391e82 release-1.13.12
 990b3e885636d763b97ed02d0d2cfc161a4e0c09 release-1.15.0
+4189160cb946bb38d0bc0a452b5eb4cdd8979fb5 release-1.15.1