diff --git a/composer.json b/composer.json
index 65e84a1..9a147b1 100644
--- a/composer.json
+++ b/composer.json
@@ -9,20 +9,20 @@
     "license": "MIT",
     "require": {
         "php": ">=5.3.3",
-        "deralex/yaml-config-service-provider": "@dev",
+        "deralex/yaml-config-service-provider": "1.0.x-dev",
         "erusev/parsedown": "^1.6",
         "justinrainbow/json-schema": "~1.4",
         "mnapoli/front-yaml": "^1.5",
         "monolog/monolog": "~1.6",
         "nesbot/Carbon": "~1.6",
         "psr/log": "^1.0",
-        "silex/silex": "=1.2.5",
+        "silex/silex": "1.2.5",
         "symfony/twig-bridge": "^2.3",
-        "symfony/yaml": "=2.6.13",
-        "twig/twig": "1.24.*"
+        "symfony/yaml": "2.6.13",
+        "twig/twig": "^1.38"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^2"
+        "friendsofphp/php-cs-fixer": "<2.3"
     },
     "autoload": {
         "psr-0": {