diff --git a/.hgtags b/.hgtags
index e77be5eb37..ea8436fd54 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5,3 +5,4 @@ b181adba0c012aee58d55265d7bced369119ce96 5.4.0
 5c8fc42807382918352f364afc82ab7f2f185889 5.8.0
 f87fc19c8a38fcdb30fb03ed3366227674bac75a 6.0.0
 78a3cb56f2e2e14f01f0a4792a1e40c9484950a0 6.2.0
+0082331adbb76e9f32441b4140f151f2b047719e 6.4.0