diff --git a/.hgtags b/.hgtags
index c361452d2f..8e25e9cff6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ a70b520434de02e84563ff24c9355edbfcf211bd 5.0.0
 2f3647bc2b8116b932578ea01c1933e56c3e6e72 5.8.0
 ae83f77292cfd1c40a0997c570a4fba56ccb09d0 6.0.0
 180de67e1814e6ba5e8668158ba9a58b95820b5c 6.2.0
+ae815400b9962362a04e7f2ba15e9f714d605fd5 6.4.0