diff --git a/.hgtags b/.hgtags
index 0fe23db898..57b871b1f4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -11,3 +11,4 @@ a0e9d9263bfaff0ae63db012fe822584b5102a2e 5.0.0
 0dee91a5bba5a180da197b0d6814350395116cf5 6.0.0
 a912189f038e7380a13958f9c04d3dbc7dc219ed 6.2.0
 36fbc12ccc235ad7d884f038846c90f971e23f0b 6.4.0
+1a28dc2b4bfae2ba5594eb3155c1b85b77b7df47 6.6.0