diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -59,3 +59,4 @@ 037f5794b55a6236d68f6485a485372dde6566e0
 83bc3100cfd6094c1d04f475ddb299b7dc3d0b33 v4.17.4
 e3de8c95baf8cc9109ca56aee8193a2cb6a54c8a v4.17.4
 f37a3126570477543507f0bc9d245ce75546181a v4.18.0
+71d8791463e87b64c1a18475de330ee600d37561 v4.18.1