diff --git a/.hgtags b/.hgtags
index 74bcb4a7b..7cb966c15 100644
--- a/.hgtags
+++ b/.hgtags
@@ -13,3 +13,4 @@ df60c7686f3982791e218977edb64d638151ca3b v18.0
 8d0762ab49b9ee8d1d3fc1fc02926c6bde6d5542 v18.1
 5de237bc41c1c2e63d0731731eee231a4213a31b v18.2
 7f21bd92812d2d08fe9a881a401cbf0f6b104081 v18.3
+78be73b57b829adb20a452ad910f7039a09c9474 v18.4