diff --git a/.hgtags b/.hgtags
index 325b1408f..016631211 100644
--- a/.hgtags
+++ b/.hgtags
@@ -129,3 +129,4 @@ fd57967d850d2361072c72562d1ed03598473478 release-0.4.12
 979045fdcbd20cf7188545c1c589ff240251f890 release-0.4.13
 93c94cfa9f78f0a5740595dde4466ec4fba664f8 release-0.4.14
 589ee12e8d7c2ae5e4f4676bcc7a1279a76f9e8e release-0.5.0
+13416db8a807e5acb4021bc3c581203de57e2f50 release-0.5.1