diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2005111..976b4ca 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -60,5 +60,5 @@ SELECT cartodb.cdb_extension_reload();
 
 A useful query:
 ```sql
-SELECT * FROM pg_extension_update_paths('cartodb') WHERE path IS NOT NULL;
+SELECT * FROM pg_extension_update_paths('cartodb') WHERE path IS NOT NULL AND source = cdb_version();
 ```