diff --git a/.hgtags b/.hgtags
index 44356a4..9aa990b 100644
--- a/.hgtags
+++ b/.hgtags
@@ -297,3 +297,4 @@
 0b65c962e0cd6783a854877b52c903cb058eec8c release-0.8.48
 a2b7e94b9807e981866bf07e37b715847d1b7120 release-0.8.49
 e7bdb8edc1bab2bc352a9fb6ce765c46575c35bf release-0.8.50
+21dacebd12f65cb57ceb8d2688db5b07fad6e06d release-0.8.51