diff --git a/.hgtags b/.hgtags
index e34dd27406..3f28968bcd 100644
--- a/.hgtags
+++ b/.hgtags
@@ -2,3 +2,4 @@
 de61c4b9fa8b5d491a76de99866c9e6f6b7f18da 3.4.0
 53ed2c17b8fab91c131e4845130f5c643b610c4e 3.6.0
 9b0631e3b18e191780b3406becced025d9a6997c 3.8.0
+441f649129f3a3797f27d820c767acf1a2389a3a 4.0.0