diff --git a/.hgtags b/.hgtags
index b2413d0d7f..404fe08d87 100644
--- a/.hgtags
+++ b/.hgtags
@@ -10,3 +10,4 @@ cf37cf340aadf693703bb72cd9090349698f5eec 2.0.0
 f2033866700eb4fb527dcb4fd53bbfde762344bc 2.6.1
 817e2580c9f9b819f8bebaaf81d6492ed00fccab 2.6.2
 b2f27a02fb70ddab32c17f7b8bba4fda4b9b538c 2.6.3
+2c3326d0ab7e85e815e15cc97789930f02b1d6f9 2.6.4