diff --git a/.hgtags b/.hgtags
index aaae5be74..fee588613 100644
--- a/.hgtags
+++ b/.hgtags
@@ -237,3 +237,4 @@ d1d0e6d7ff0ca3c0dd1be1ef1cfff2e3fd0b4e1c release-0.7.47
 9816fb28eda599bfd53940e6d3b6617d1ecb6323 release-0.7.48
 452b9d09df8e3f2fb04b2a33d04d2f3a6436eb34 release-0.7.49
 e4350efa7cf7a0e868c2236a1137de8a33bd8ec6 release-0.7.50
+f51f2bec766c8b6d7e1799d904f18f8ea631bd44 release-0.7.51