diff --git a/.hgtags b/.hgtags
index d64ab4c9c0..77065e03c5 100644
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ a7c5dedf708211de95b5d6f18be8fe2a40b01477 5.8.0
 b3e615c084feedfd747423c775eb55300824804e 6.0.0
 aead29923a0444b44ca13ac0261081c5fdebdf86 6.2.0
 6c687b0522c7b41e9d159b8245a8b08a1aac0951 6.4.0
+23e5472decd6217b0bee98fa9cf1e34825b42702 6.6.0