diff --git a/.hgtags b/.hgtags
index a183a3e56a..9816668527 100644
--- a/.hgtags
+++ b/.hgtags
@@ -14,3 +14,4 @@ ef0c05005b1c3d35bbc4ed9501d62b233cfefb66 3.6.0
 7ffc47bc807c6f8fa474bf4a83217aef79a260b5 4.0.0
 f36250164782018c356416ba4cf1b6eedcca74d4 4.2.0
 49d8616786cb749ba2cb77185dcc0f52cb63901f 4.4.0
+6a21cf81788f58f235e073a7775d820a05916854 4.6.0