diff --git a/.hgtags b/.hgtags
index 84a125fae6..e6c1f496f7 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ a23904b2de47bbbf192f177b5b71eab4dffee3a4 5.8.0
 d878e734d29c7d23425a7ec5c82ca0bbafb03914 6.0.0
 30f35ed9464dc5b5bfbc810d5a0d456cb89cd678 6.2.0
 5f95992fbe07b77c9f20bff5e175677c2d3179d2 6.4.0
+9afe57206c846a6ad4f1380e7223533efee94e7e 6.6.0