diff --git a/.hgtags b/.hgtags
index 0579197e42..b4afafe2a9 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 dcc4ce59639bc6145a5568cca3b02cc1bf43024f 6.4.0
+b3de545c1ad54e7ce08368e0b053c5ade38edd3d 6.6.0