diff --git a/.hgtags b/.hgtags
index 85568ceac65..417d9f5320c 100644
--- a/.hgtags
+++ b/.hgtags
@@ -308,3 +308,4 @@ e7dbbef69d12b6a74dfad331b7188e7f893e8d29 jdk9-b62
 989253a902c34dcb7564695161c9200a5fbb7412 jdk9-b63
 8ffdeabc7c2b9a8280bf46cae026ac46b4d31c26 jdk9-b64
 4915246064b2f89d5f00c96e758686b7fdad36a6 jdk9-b65
+ff3fc75f3214ad7e03595be1b0d0f38d887b6f0e jdk9-b66