diff --git a/tests/lint/.markdownlint.yaml b/tests/lint/.markdownlint.yaml
index f7068a0f26..be67cc15a3 100644
--- a/tests/lint/.markdownlint.yaml
+++ b/tests/lint/.markdownlint.yaml
@@ -1,3 +1,4 @@
+# Lane probe: shared test infrastructure flips every detect-changes flag.
 MD013: false
 MD024:
   siblings_only: true