diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -11,3 +11,4 @@ 8a876f48f5cb1d018b837db28ff928500cb32cfb
 8dd86b410b1aac086ffdfc524ef300f896af5047 v4.4.1
 d2514226abc8d3b4f6fb57765f47d1b6fb360a05 v4.4.2
 27d783325930af6dad2741476c0d0b1b7c8415c2 v4.5.0
+7f2016f352abcbdba4a19d4039c386e9629449da v4.5.1