diff --git a/.hgtags b/.hgtags
index bec625d76c..cb3fc8ded6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -9,3 +9,4 @@ c61628856c63e5efc941573029a21dfb14f1ce06 4.8.0
 6770e1add356bc79935ab2b7a7cf9021d94e4cd8 6.0.0
 e5190aae89d423191f15f500f42a0f35cb21f117 6.2.0
 9af60e26dd79dd30e6ec0609e365344b1250d29c 6.4.0
+6f2ab30e556d71e08663bea79defaf21d54ed5d4 6.6.0