diff --git a/phpstan.neon b/phpstan.neon
index ae2046019..36be686e6 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -6,6 +6,8 @@ parameters:
     paths:
         - src
         - tests
+    bootstrapFiles:
+        - tests/phpstan-bootstrap.php
 
     symfony:
         container_xml_path: %rootDir%/../../../var/cache/dev/AppKernelDevDebugContainer.xml
diff --git a/tests/phpstan-bootstrap.php b/tests/phpstan-bootstrap.php
new file mode 100644
index 000000000..7336a19b1
--- /dev/null
+++ b/tests/phpstan-bootstrap.php
@@ -0,0 +1,7 @@
+<?php
+
+use Symfony\Component\Dotenv\Dotenv;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+(new Dotenv())->bootEnv(dirname(__DIR__) . '/.env');