diff --git a/.hgtags b/.hgtags
index 058d2d3789..43f9961760 100644
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ f7b0f3470691803916639491e991c56f05c3a1bd 5.6.0
 b485add0b1272a8ff4e7e030e9799442ab256e3c 5.8.0
 d4853f3164328b673917f64fcc7e84445333626d 6.0.0
 425bc2e2b8040403df3c016d0b303374ff471302 6.2.0
+f9ca917c990f4e0c0deb21b9b68598fd685e3f29 6.4.0