diff --git a/.hgtags b/.hgtags
index 5d03f6168d..89519bc8cd 100644
--- a/.hgtags
+++ b/.hgtags
@@ -3,3 +3,4 @@ d9f7fda1212e61153ce87ef5a7ebba1aa906d9f2 1.4.0
 926f70090196ceefd74450f182a8a9b053282600 1.6.0
 9eada792e0e9eda93b8719d4ec92590f2ff3dacf 1.8.0
 8a47bba1738af17af3c6702cc29bd7a6e268dcfb 2.0.0
+c66ac42308b219dd773e9a4f2b76e344cf913cc8 2.2.0