diff --git a/composer.json b/composer.json
index 20004d0..7587226 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,7 @@
         "kahlan/kahlan": "^2.5",
         "phpunit/phpunit": "^5.5",
         "eugene-matvejev/battleship-game-api-json-schema": "^1.0.0",
-        "justinrainbow/json-schema": "5.2.1"
+        "justinrainbow/json-schema": "^5.2"
     },
     "scripts": {
         "post-update-cmd": "@deployment-scripts",
diff --git a/composer.lock b/composer.lock
index bbcc175..a1decd9 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "9a7141a114f9fcd7d47c00d742d15333",
+    "content-hash": "eed3b5409c554e8dc902ba97530fb0c6",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -3034,16 +3034,16 @@
         },
         {
             "name": "justinrainbow/json-schema",
-            "version": "5.2.1",
+            "version": "5.2.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/justinrainbow/json-schema.git",
-                "reference": "429be236f296ca249d61c65649cdf2652f4a5e80"
+                "reference": "0d4fda8efdf216ade084a7f0aad5637572ce9835"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/justinrainbow/json-schema/zipball/429be236f296ca249d61c65649cdf2652f4a5e80",
-                "reference": "429be236f296ca249d61c65649cdf2652f4a5e80",
+                "url": "https://api.github.com/repos/justinrainbow/json-schema/zipball/0d4fda8efdf216ade084a7f0aad5637572ce9835",
+                "reference": "0d4fda8efdf216ade084a7f0aad5637572ce9835",
                 "shasum": ""
             },
             "require": {
@@ -3052,7 +3052,6 @@
             "require-dev": {
                 "friendsofphp/php-cs-fixer": "^2.1",
                 "json-schema/json-schema-test-suite": "1.2.0",
-                "phpdocumentor/phpdocumentor": "^2.7",
                 "phpunit/phpunit": "^4.8.22"
             },
             "bin": [
@@ -3097,7 +3096,7 @@
                 "json",
                 "schema"
             ],
-            "time": "2017-05-16T21:06:09+00:00"
+            "time": "2017-10-10T13:22:37+00:00"
         },
         {
             "name": "kahlan/kahlan",