diff --git a/.hgtags b/.hgtags
index 34dbe001c4..ab129a59fe 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4,3 +4,4 @@ d7e3a25d15aa72096b29d985483e3caeb1fc4a43 5.8.0
 e55605b40ed71ec25e3079bb9c8b473bf879af58 6.0.0
 f3fd1dcb37f9d934da6f6bb0c31770409a93265f 6.2.0
 b7fb7dc89a758cc91d55f523db7513c6365b7af2 6.4.0
+1ab9ff3f2173cca3d03571d4b090e1e9fa085632 6.6.0