diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -63,3 +63,4 @@ 3259dc7caea48687eab018ee646ae6ad7e7ef377
 efe23d6c178c11d575a0214181276a3452776e48 v1.5.2
 1a498b11f1540f5b94b6f6009298f5dc3eaad9e9 v1.5.3
 3447862ad8c9ceba85857774c526e39fde3a2281 v1.5.4
+c15d7b336af58df9f1bbc8f8957464e7ea618d4c v1.6.0rc1