diff --git a/yamlfmt.yaml b/yamlfmt.yaml
index b6eed1bd1..93ab18401 100644
--- a/yamlfmt.yaml
+++ b/yamlfmt.yaml
@@ -1,2 +1,3 @@
+# https://github.com/google/yamlfmt/blob/main/docs/config-file.md
 gitignore_excludes: true
 line_ending: lf