diff --git a/.hgtags b/.hgtags
index d9282cea5..11280c509 100644
--- a/.hgtags
+++ b/.hgtags
@@ -391,3 +391,4 @@ e27a215601292872f545a733859e06d01af1017d release-1.9.3
 b78018cfaa2f0ec20494fccb16252daa87c48a31 release-1.9.6
 54117529e40b988590ea2d38aae909b0b191663f release-1.9.7
 1bdc497c81607d854e3edf8b9a3be324c3d136b6 release-1.9.8
+ef107f3ddc237a3007e2769ec04adde0dcf627fa release-1.9.9