diff --git a/.hgtags-top-repo b/.hgtags-top-repo
index 6935eae9e7e..f8935a56868 100644
--- a/.hgtags-top-repo
+++ b/.hgtags-top-repo
@@ -293,3 +293,4 @@ b6cca3e6175a69f39e5799b7349ddb0176630291 jdk9-b47
 0064e246d83f6f9fc245c19b6d05041ecaf4b6d4 jdk9-b48
 d91ed1951b948210590ce1394bea5515357246ba jdk9-b49
 d1f37d39ff2421f956a6ddf316cf763807bc3363 jdk9-b50
+6207b4b8731ca75c51b031c47daa813ab92ef558 jdk9-b51