diff --git a/.hgtags b/.hgtags
index 32115bbcc9..ba7feea1c2 100644
--- a/.hgtags
+++ b/.hgtags
@@ -12,3 +12,4 @@ e7516800e812afa2065d1e08e86021dcf0cc5bdb 5.0.0
 f3e01b105d1983d8835916e46748a28f492a5aec 5.8.0
 46c0de980742bcd165e258d654df7a2b1d164f8f 6.0.0
 4db8c1cac42da1712c7ea2af1cf35e15ee4f73e0 6.2.0
+26378efb268e690f89e286eeb4277d95b1cf4eeb 6.4.0