diff --git a/.hgtags b/.hgtags
index a6a920b..1295eca 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@
 61fe85a73bc32955feeb6fe17e668d9f522adde4 v1.7
 efbc861f9b9460068c48a250232d343ffa7d5726 v1.7
 551952b2e7a6bf5b1196778638c8cdc3c40b108f v1.8
+77466ee7ffb5b07efda9b1dbed858379c987a9da v1.8.1