diff --git a/.hgtags b/.hgtags
index 0497857bb5..fd08b205ba 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@ b9418132fd61d8a9dc13367231d413cc242dd017 5.6.0
 d581210b3d284f7541bbbe2017397633732a0f94 6.0.0
 273c1a9b025e4b0cd01dada265580b12d4d9cb60 6.2.0
 ff07920b0f526e48a717536e3f5a9db451a5b93c 6.4.0
+9bd8144530943d8d615369480b5923de86444424 6.6.0