diff --git a/.hgtags b/.hgtags
index 9dd6783e6b9fb1ce10087f5ec12c8d805cc43db0..06d289325d6be8cc12b23f01fdfc4b7ab72d9e13 100755
--- a/.hgtags
+++ b/.hgtags
@@ -540,3 +540,4 @@ ad0e15543836d64d6399d28b32852510435e344a 5.1.0-release
 04538b8157c1f5cdacd9403f0a395452d4a93689 5.1.6-release
 ac3b1332ad4f55b7182a8cbcc1254535a0069f75 5.1.7-release
 23ea0fe36fadf009a60c080392ce80e4bf8af8d9 5.1.8-release
+52422540bfe54b71155aa455360bee6e3ef1fd96 5.1.9-release