diff --git a/triagebot.toml b/triagebot.toml
index 62a99b704388f..883bc8720e2be 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -468,6 +468,9 @@ This was probably unintentional and should be reverted before this PR is merged.
 If this was intentional then you can ignore this comment.
 """
 
+[mentions."src/tools/x"]
+message = "`src/tools/x` was changed. Bump version of Cargo.toml in `src/tools/x` so tidy will suggest installing the new version."
+
 [assign]
 warn_non_default_branch = true
 contributing_url = "https://rustc-dev-guide.rust-lang.org/contributing.html"