diff -r 618aec1734d5 -r 9f8355f119e7 server/src/composer.json
--- a/server/src/composer.json	Thu Sep 22 22:57:06 2016 +0200
+++ b/server/src/composer.json	Thu Sep 22 23:00:44 2016 +0200
@@ -11,26 +11,26 @@
       }
     ],
     "require": {
-        "php": ">=5.5.9",
-        "laravel/framework": "5.2.*",
+        "php": ">=5.6.4",
+        "laravel/framework": "5.3.*",
         "easyrdf/easyrdf": "dev-master",
         "ml/json-ld": "*",
-        "caseyamcl/phpoaipmh": "~2.4",
-        "guzzlehttp/guzzle":   ">=6.1",
-        "laravelcollective/html": "5.2.*",
-        "shift31/laravel-elasticsearch": "~1.0",
-        "asm89/stack-cors": "dev-master as 0.2.2",
-        "barryvdh/laravel-cors": "^0.7.3",
+        "caseyamcl/phpoaipmh": "~2.5.1",
+        "guzzlehttp/guzzle":   ">=6.2",
+        "laravelcollective/html": "5.3.*",
+        "shift31/laravel-elasticsearch": "~2.0",
+        "asm89/stack-cors": "~1.0",
+        "barryvdh/laravel-cors": "^0.8.2",
         "phpseclib/phpseclib": "^2.0"
     },
     "require-dev": {
-        "fzaninotto/faker": "~1.4",
-        "phpunit/phpunit": "~5.0",
-        "phpspec/phpspec": "~2.1",
-        "fabpot/php-cs-fixer": "^1.9",
-        "mockery/mockery": "dev-master",
-        "symfony/dom-crawler": "~3.0",
-        "symfony/css-selector": "~3.0"
+        "fzaninotto/faker": "~1.6",
+        "phpunit/phpunit": "~5.5",
+        "phpspec/phpspec": "~3.1",
+        "friendsofphp/php-cs-fixer": "^1.12",
+        "mockery/mockery": "~0.9.5",
+        "symfony/dom-crawler": "~3.1",
+        "symfony/css-selector": "~3.1"
     },
     "autoload": {
         "classmap": [