Added tag jdk8u121-b10 for changeset 20ae249ff5eb
diff --git a/langtools/.hgtags b/langtools/.hgtags
index ed695ed..d2b3c80 100644
--- a/langtools/.hgtags
+++ b/langtools/.hgtags
@@ -678,3 +678,4 @@
 6cd0cd4078e9ec8ad9fa167cabf9c671ed21fc66 jdk8u121-b07
 8efc10efbfe137ed5de6bf55875fdafd25bb6a1b jdk8u121-b08
 57a26fe61f2b435332c0697e92965a22246cd143 jdk8u121-b09
+53c94a674d6076ff390c62a7682ea0e87a893cdc jdk8u121-b10