diff --git a/langtools/.hgtags b/langtools/.hgtags
index 7a22bbd527e..91260bed92f 100644
--- a/langtools/.hgtags
+++ b/langtools/.hgtags
@@ -291,3 +291,4 @@ de2ce70d907c9f227b802cea29285bece5194cd5 jdk9-b44
 e272d9be5f90edb6bb6b40f7816ec85eec0f5dc2 jdk9-b46
 230c139552501e612dd0d4423ac30f94c1201c0d jdk9-b47
 5b102fc29edf8b7eee7df208d8a8bba0e0a52f3a jdk9-b48
+15c79f28e30a1be561abe0d67674232ad5034d32 jdk9-b49