diff --git a/composer.json b/composer.json
index f1c6d03..303a6ff 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
     },
     "require": {
         "filp/whoops": "^1.1 || ^2.0",
-        "zendframework/zend-diactoros": "^1.1@dev"
+        "zendframework/zend-diactoros": "^1.1.0"
     },
     "autoload-dev": {
         "psr-4": {