diff --git a/composer.json b/composer.json
index a91edfbc..0f3637e7 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,8 @@
   "require": {
     "php": "^8.0",
     "ext-json": "*",
-    "ext-mbstring": "*"
+    "ext-mbstring": "*",
+    "ergebnis/json": "^1.0.0"
   },
   "require-dev": {
     "ergebnis/license": "^2.1.0",
diff --git a/composer.lock b/composer.lock
index b09a3bf9..c339b939 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,71 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "0c9ba121f2e7fbdecaf0e3254dfd669d",
-    "packages": [],
+    "content-hash": "e729e020d7afccfaff1130486972b6fe",
+    "packages": [
+        {
+            "name": "ergebnis/json",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ergebnis/json.git",
+                "reference": "b3e8d074dda98aeaaaeabecb4d397176709d9562"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ergebnis/json/zipball/b3e8d074dda98aeaaaeabecb4d397176709d9562",
+                "reference": "b3e8d074dda98aeaaaeabecb4d397176709d9562",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.0"
+            },
+            "require-dev": {
+                "ergebnis/composer-normalize": "^2.29.0",
+                "ergebnis/data-provider": "^1.2.0",
+                "ergebnis/license": "^2.1.0",
+                "ergebnis/php-cs-fixer-config": "^5.0.0",
+                "ergebnis/phpstan-rules": "^1.0.0",
+                "fakerphp/faker": "^1.20.0",
+                "infection/infection": "~0.26.16",
+                "phpunit/phpunit": "^9.5.27",
+                "psalm/plugin-phpunit": "~0.18.4",
+                "vimeo/psalm": "^5.1.0"
+            },
+            "type": "library",
+            "extra": {
+                "composer-normalize": {
+                    "indent-size": 2,
+                    "indent-style": "space"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Ergebnis\\Json\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Andreas Möller",
+                    "email": "am@localheinz.com"
+                }
+            ],
+            "description": "Provides a Json value object for representing a valid JSON string.",
+            "homepage": "https://github.com/ergebnis/json",
+            "keywords": [
+                "json"
+            ],
+            "support": {
+                "issues": "https://github.com/ergebnis/json/issues",
+                "source": "https://github.com/ergebnis/json"
+            },
+            "time": "2022-12-10T14:19:08+00:00"
+        }
+    ],
     "packages-dev": [
         {
             "name": "amphp/amp",