diff --git a/composer.json b/composer.json
index 6829fa2..b5fa4c8 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,7 @@
         "psr/http-message": "^1.0"
     },
     "require-dev": {
-        "adriansuter/php-autoload-override": "^1.3",
+        "adriansuter/php-autoload-override": "^1.4",
         "laminas/laminas-diactoros": "^2.17",
         "nyholm/psr7": "^1.5",
         "php-http/psr7-integration-tests": "dev-master",