diff --git a/.hgtags b/.hgtags
index c94794dcf3..15155d3232 100644
--- a/.hgtags
+++ b/.hgtags
@@ -3,3 +3,4 @@ cad9154b8847193dff951b9c4c0a4fa16c66d550 1.2.0
 107d9341d8067b074c60250a15e6cede4f038f7e 1.4.0
 dd5101ebaec9f7d1d13071e0e1ffcf3958a6b0f1 1.6.0
 13263ec7282b5a58dedd84cceb8e33de76a6952e 1.8.0
+51cd287a718d496c62a7534e789f01cfd5710d28 1.8.1