diff --git a/.hgtags b/.hgtags
index 4630189..1d383b4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@ e1365403fefc8b192252fa1dfda997f6c166ab60 v2.0.0
 7fb1c286cca3c0c07974cc1b59002cfe2b7132f5 v2.1.0
 dc582486455b428fc2ae50913b7844966ce64afc v2.1.1
 d2406d0bce25549bb35c59767574386d3d241ace v2.2.0
+c1cda256969c75523f9a8ef9629f08fca9ded216 v2.2.1