diff --git a/.hgtags b/.hgtags
index ce10f5e784..9dd6783e6b 100755
--- a/.hgtags
+++ b/.hgtags
@@ -539,3 +539,4 @@ ad0e15543836d64d6399d28b32852510435e344a 5.1.0-release
 2ea47f358b171178eb9a95503a1670d519c2886f 5.1.5-release
 04538b8157c1f5cdacd9403f0a395452d4a93689 5.1.6-release
 ac3b1332ad4f55b7182a8cbcc1254535a0069f75 5.1.7-release
+23ea0fe36fadf009a60c080392ce80e4bf8af8d9 5.1.8-release