diff --git a/composer-dependency-analyser.php b/composer-dependency-analyser.php
index ab40195069f..374fccc81f6 100644
--- a/composer-dependency-analyser.php
+++ b/composer-dependency-analyser.php
@@ -21,6 +21,7 @@
         __DIR__ . '/stubs',
         __DIR__ . '/tests',
         __DIR__ . '/rules-tests',
+        __DIR__ . '/build/config/config-downgrade.php'
     ], [ErrorType::UNKNOWN_CLASS])
 
     ->disableExtensionsAnalysis();