diff --git a/langtools/.hgignore b/langtools/.hgignore
index e742c856114..3e5642a05a5 100644
--- a/langtools/.hgignore
+++ b/langtools/.hgignore
@@ -1,5 +1,6 @@
 ^build/
 ^dist/
+^webrev
 ^.idea
 /nbproject/private/
 ^.hgtip