diff --git a/.hgtags b/.hgtags
index ea3a7b76d5..619ec998cc 100644
--- a/.hgtags
+++ b/.hgtags
@@ -2,3 +2,4 @@
 f67943f30b461c6574d3cb9b176a01bcb9094af9 6.0.0
 be1ba7b334990bb5751e843f34f5fffe1b704423 6.2.0
 cc1d73af08d9c8711b4f264984638ca666b82fe9 6.4.0
+e1da048e19d0c56e1fe657b520e5a449f1cd8a8b 6.6.0