diff --git a/langtools/.hgtags b/langtools/.hgtags
index fdfe9e0ee78..185fc474c19 100644
--- a/langtools/.hgtags
+++ b/langtools/.hgtags
@@ -445,3 +445,4 @@ acda582f271a2c776b0391fc93dd669b1d44d461 jdk-10+19
 e2096f634fb46d469c9f8cada7dc5e27d1409b1f jdk-9+180
 5ecbed31312536cc2f3c454425c7607385ff8834 jdk-9+181
 d78323fc3fd5fc443e3be8f88bf874ca3744c2a1 jdk-10+20
+fd3ce6210d0c53489ba231ee83ff61f9a3cd3288 jdk-10+21