diff --git a/composer.json b/composer.json
index 3a9b3ed..2b5b45e 100644
--- a/composer.json
+++ b/composer.json
@@ -12,22 +12,22 @@
     ],
     "require": {
         "php": "^5.4 || ^7.0",
-        "psr/http-message": "^1.0",
+        "clue/stream-filter": "^1.4",
         "php-http/message-factory": "^1.0.2",
-        "clue/stream-filter": "^1.4"
+        "psr/http-message": "^1.0"
     },
     "provide": {
         "php-http/message-factory-implementation": "1.0"
     },
     "require-dev": {
-        "zendframework/zend-diactoros": "^1.0",
-        "guzzlehttp/psr7": "^1.0",
         "ext-zlib": "*",
-        "phpspec/phpspec": "^2.4",
-        "henrikbjorn/phpspec-code-coverage" : "^1.0",
-        "coduo/phpspec-data-provider-extension": "^1.0",
         "akeneo/phpspec-skip-example-extension": "^1.0",
-        "slim/slim": "^3.0"
+        "coduo/phpspec-data-provider-extension": "^1.0",
+        "guzzlehttp/psr7": "^1.0",
+        "henrikbjorn/phpspec-code-coverage" : "^1.0",
+        "phpspec/phpspec": "^2.4",
+        "slim/slim": "^3.0",
+        "zendframework/zend-diactoros": "^1.0"
     },
     "suggest": {
         "zendframework/zend-diactoros": "Used with Diactoros Factories",
@@ -56,5 +56,8 @@
         "branch-alias": {
             "dev-master": "1.6-dev"
         }
+    },
+    "config": {
+        "sort-packages": true
     }
 }