diff --git a/.hgtags b/.hgtags
index 350c703b276..403e618de33 100644
--- a/.hgtags
+++ b/.hgtags
@@ -436,3 +436,4 @@ b0f2b8ff25a2209b2c807785d75f20e5086bbfc2 jdk-10+10
 e6d70017f5b9adbb2ec82d826973d0251800a3c3 jdk-10+12
 9927a9f16738e240ab7014f0118f41e314ef8f99 jdk-10+13
 9ef5029b247b4d940080417a287440bbdbab995b jdk-10+14
+878e216039322cb3f0ecbd0944642a2b4e2593f3 jdk-10+15