diff --git a/.hgtags b/.hgtags
index ef10bf0ad0ee060df107ad1924356eca24913675_LmhndGFncw==..92379e6f50cd08b26b691cb20dff2cf0a6a7c9e9_LmhndGFncw== 100644
--- a/.hgtags
+++ b/.hgtags
@@ -105,3 +105,4 @@
 6c8792ae72eed4acd5b7b95948a2900cc451ad77 21.2.3
 6e248b67e413cae381a6d9d85d4696677c55ff6e 21.2.4
 f8a47162f1890bdbe93dbd115f7cc8d976d948d4 21.3.0
+ef10bf0ad0ee060df107ad1924356eca24913675 21.4.0