diff --git a/.hgtags b/.hgtags
index b02d7a96fc..d181210981 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
 790271308b23a4856ade0be330ee59b5d69e7e75 6.0.0
 729e05a801e119103c3087b3f8708632d0121ee2 6.2.0
 300d3e729f2ce6c918ea534784d82917315a2e82 6.4.0
+c9f273114e8b76b0154115cb01f9a0345109cf84 6.6.0