diff --git a/.hgtags b/.hgtags
index fc15cc27f6..eb251e8c47 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4,3 +4,4 @@ a68adc6776dee3ac3eab1cb866fbdafc51759f59 5.8.0
 71ff800bfe35021ec6589840f5eb0e54246bb414 6.0.0
 b62ce70e935984ff8f07b3bea37989e40df5c548 6.2.0
 d990a954b8dee278cba42ec5d12cd8a6d838d1f3 6.4.0
+2771d90bda9cb483d796de366484f9a846afd651 6.6.0