diff --git a/.hgtags b/.hgtags
index 0f60adeca6..75b5fc7b2e 100644
--- a/.hgtags
+++ b/.hgtags
@@ -20,3 +20,4 @@ cd0f73fb47ce34dd5c34d439ffe2176cc97abe40 4.2.0
 735c0107debb442253b8fb890a4eda5507b79719 4.8.0
 adc6e0a4f22f45fd06b00431321216741931cf7b 5.0.0
 f275213d44807f222652874511c687b86c84894e 5.2.0
+66f6bcd2b69718bdfa04c8a0aa5d83dd3fe4fbc5 5.4.0