diff --git a/.hgtags b/.hgtags
index bbcaadca8e..9098e45a0a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -2753,3 +2753,4 @@ c514693882b9f1c7be2e76a0307926df799da3ea v7-4-021
 923738744a60e5e0bd2d9990758a2169106807ca v7-4-028
 2d3fbc68b3a84ad2bf4d58c77244043328e3fb81 v7-4-029
 0978e99043d2a9faedb1a3bad75b59121c270bde v7-4-030
+b21b5dcdca2197fc86b9bde77bd6777f0e2d5175 v7-4-031