diff --git a/.hgtags b/.hgtags
index 310a62c7fdd8ea966e898579fccd2f3fa01bc74e..28a93dc834324349572ac205a486587fc2cbd4f9 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ ccd6a16502e0650d91d85c4b86be05cbcd461a87 jdk7-b42
 0be222241fd405e48915647facfaa176621b39b9 jdk7-b48
 d70978bc64bc7a04be7797ab0dcd9b7b1b3a6bff jdk7-b49
 0edbd0074b02b42b2b83cc47cb391d4869b7a8ec jdk7-b50
+3eb8f1047a7402a9a79937d1c39560e931e91da2 jdk7-b51