diff --git a/.hgtags b/.hgtags
index f7508f2292..a4a5676a02 100644
--- a/.hgtags
+++ b/.hgtags
@@ -3,3 +3,4 @@
 60b1d8f3d17a319a5cfec219a1d423e1d872b984 6.0.0
 8e9cf003f13e9ddddabc7f7aee80b09af44561e7 6.2.0
 acd3c908d831c1d6796572362d6abc82b3f80abf 6.4.0
+0fc67a8c65afc4cf2f456bc9f44b889027f954ad 6.6.0