diff --git a/.php_cs b/.php_cs
new file mode 100644
index 0000000..febeee5
--- /dev/null
+++ b/.php_cs
@@ -0,0 +1,9 @@
+<?php
+
+return Symfony\CS\Config\Config::create()
+    ->level(Symfony\CS\FixerInterface::PSR2_LEVEL)
+    ->fixers([])
+    ->finder(
+        Symfony\CS\Finder\DefaultFinder::create()->in(__DIR__ . '/src')
+    )
+;