diff --git a/README.md b/README.md
index 5692c11..7b6e91f 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ See [sources](sources.md).
 
 ## Want to help?
 
-See [contributing](contributing.md).
+See [contributing](contributing.md), especially *[which files to update](https://github.com/hughrun/public_library_map/blob/master/contributing.md#which-files-to-update)*.
 
 ## Licenses