diff --git a/.hgtags b/.hgtags
index 5d7524f859..06f807f837 100644
--- a/.hgtags
+++ b/.hgtags
@@ -19,3 +19,4 @@ e3be090ae5171a2430ae8374c123b7bba22662bb 5.6.0
 68edcbd53832d64cff93cf1a06fd9e6e5d716b19 6.0.0
 012191b521a92020e3acd4f0e9c5d2cb5a619244 6.2.0
 29a42000ed380fd805b23d767c30942b76382357 6.4.0
+886d6c98071caea8d9ef0f574d5678299a7bcec2 6.6.0