diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c5e9c2f1f..f1f0f774c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -55,6 +55,7 @@ As a quick reference, the format of each page should match the following templat
 
 > Short, snappy description.
 > Preferably one line; two are acceptable if necessary.
+> More information: <https://url-to-upstream.tld>.
 
 - Example description: