diff --git a/.hgtags b/.hgtags
index 94734fe64..ea345c913 100644
--- a/.hgtags
+++ b/.hgtags
@@ -460,3 +460,4 @@ f618488eb769e0ed74ef0d93cd118d2ad79ef94d release-1.19.6
 8c65d21464aaa5923775f80c32474adc7a320068 release-1.19.8
 da571b8eaf8f30f36c43b3c9b25e01e31f47149c release-1.19.9
 ffcbb9980ee2bad27b4d7b1cd680b14ff47b29aa release-1.19.10
+df34dcc9ac072ffd0945e5a1f3eb7987e8275375 release-1.21.0