diff --git a/.hgtags b/.hgtags
index b3983af002..fd73ee9edb 100644
--- a/.hgtags
+++ b/.hgtags
@@ -15,3 +15,4 @@ d761efb2ac196534d0ff715146bd9b727c20bd40 5.2.0
 a4cd8b29bbafd25dcf991704353b57b10e383f59 6.0.0
 f3109538cd603d85a10e5070ce8a1bfd92416dfe 6.2.0
 260a52bf21527f2e746e08ae3e2eb5d86551fdf2 6.4.0
+b812bca2a752860635219290eca696b83042e406 6.6.0