diff --git a/.hgtags b/.hgtags
index f543f7380d..72af6b1c00 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 f0b45be36bec6910f405bc2d9e404e4d6d183800 6.0.0
 f1899b10e50bdc218cb34793bc359a3bf14aa0ab 6.2.0
+2363bfe4b14f2e5c1a5237d9169e8802a4393d57 6.4.0