diff --git a/composer.json b/composer.json
index a2aa29a5a..747747290 100644
--- a/composer.json
+++ b/composer.json
@@ -62,7 +62,8 @@
         "symfony/web-profiler-bundle": "^5.0"
     },
     "config": {
-        "bin-dir": "bin"
+        "bin-dir": "bin",
+        "vendor-dir": "tests/app/vendor"
     },
     "autoload": {
         "psr-4": {