diff --git a/.hgtags b/.hgtags
index d56e6adf3..4d0ca9e97 100644
--- a/.hgtags
+++ b/.hgtags
@@ -383,3 +383,4 @@ d5ea659b8bab2d6402a2266efa691f705e84001e release-1.7.8
 2b3b737b5456c05cd63d3d834f4fb4d3776953d0 release-1.7.11
 3ef00a71f56420a9c3e9cec311c9a2109a015d67 release-1.7.12
 01d52c2b460da263fd1557ab5f8d0af5e404b47a release-1.8.0
+5959efb40b07ea30693c92ddbdec82a78577e671 release-1.8.1