diff --git a/.hgtags b/.hgtags
index 254328130..6f9d699b7 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4,3 +4,4 @@ d3a37950495c55c255699400edd5930538cbacb4 milestone_3
 bda291e79a4f4cd282b67552e56dad9935bd4018 mileston_4_1
 0000000000000000000000000000000000000000 mileston_4_1
 77f4aaa4e4bdc46a0ca1b84afaa33c72db650f95 milestone_4_1
+84bc1acacd933d1439991b84f29e9a5818d9d098 milestone_6