diff --git a/composer.json b/composer.json
index ec6e6ce9..637a66ab 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,8 @@
         "roave/security-advisories": "dev-master",
         "filp/whoops": "^2.0",
         "symfony/var-dumper": "^3.0",
-        "vlucas/phpdotenv": "^2.2"
+        "vlucas/phpdotenv": "^2.2",
+        "zendframework/zend-expressive-tooling": "^0.4"
     },
     "autoload": {
         "psr-4": {