diff --git a/.hgtags b/.hgtags
index 6661939..cb3e875 100644
--- a/.hgtags
+++ b/.hgtags
@@ -19,3 +19,4 @@ d6664bf0fd8f54a4a7661069b2cc766e9d5904e6 release_0.8.14
 940dd56e51f69b89385d60927d7cb88b53bb24d9 release_0.8.101_pre
 d82b0ff239672a9d88ac3f0d33b4c0733c28cb76 release_0.8.102_pre
 13a952902e2264fc69d13633dbe9e03e4b71895d release_0.9.0
+e87c83888a71079049555f57a9587dedf1f154af release_0.9.1