diff --git a/.hgtags b/.hgtags
index bc3bd269..9060910b 100644
--- a/.hgtags
+++ b/.hgtags
@@ -161,3 +161,4 @@ cffc736664df4fba5dad69e5c5b2ac61878668a5 RECOLL_1_19_12p2
 e546afbecc6bcd2d3af8c083d4fbc2cb345f4108 RECOLL_1_20_0p1
 cd9d0513b797337e51f6e41d6919d530829aa4ef RECOLL_1_20_0p2
 264635f65a94989088c09aa3becc3bf1bdae99a5 RECOLL_1_20_1
+371d5921692ebfd5f64459953f953cdf0024b1fa RECOLL_1_21_0