diff --git a/.hgtags b/.hgtags
index f4f3314ddb4..72992e511c8 100644
--- a/.hgtags
+++ b/.hgtags
@@ -76,3 +76,4 @@ b63020797f9678adaf4d2c3e26574a9eef2ef028 v3.1b1
 0b87e438e1b53e3f812cad963a7fdb65d198ba2f v3.1rc2
 a69a031ac1402dede8b1ef80096436bca6d371f3 v3.1
 f2a12f5259e7edd223c750e05ef56162d6a5345e v3.1.1rc1
+0000000000000000000000000000000000000000 v3.1.1rc1