diff --git a/composer.json b/composer.json
index 4777f4f..96d54c6 100644
--- a/composer.json
+++ b/composer.json
@@ -21,11 +21,11 @@
         "friendsofphp/php-cs-fixer": "~2.14"
     },
     "autoload": {
-        "psr-0": {"Bramus": "src/"}
+        "psr-4": {"Bramus\\": "src/Bramus/"}
     },
     "scripts": {
         "test": "./vendor/bin/phpunit --colors=always",
         "lint": "php-cs-fixer fix --diff --dry-run",
         "fix": "php-cs-fixer fix"
     }
-}
\ No newline at end of file
+}