diff --git a/.hgtags b/.hgtags
index 50dbdbf2af8..274afaa53f4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -90,3 +90,4 @@ ea1fdafbe4fe2458ac17287e0d6c709ed00fce5c v2.6.4rc2
 c9f68e42ab796a3bab4f8cf3cc69ce10503cb990 v2.6.5rc1
 fa4630916699046357a5ac16884f3fc47bd0eaa6 v2.6.5rc2
 99af4b44e7e490390817a597a542546d749e698e v2.6.5
+c1dc9e7986a2a8e1070ec7bee748520febef382e v2.6.6rc1