diff --git a/CHANGELOG.md b/CHANGELOG.md
index 114c7fdd..bf775211 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## Unreleased
 
-For a full diff see [`2.22.0...main`][2.22.0...main].
+For a full diff see [`2.23.0...main`][2.23.0...main].
+
+## [`2.23.0`][2.23.0]
+
+For a full diff see [`2.22.0...2.23.0`][2.22.0...2.23.0].
+
+### Changed
+
+- Updated `ergebnis/json-normalizer` ([#864]), by [@localheinz]
 
 ### Fixed
 
@@ -665,6 +673,7 @@ For a full diff see [`81bc3a8...0.1.0`][81bc3a8...0.1.0].
 [2.20.0]: https://github.com/ergebnis/composer-normalize/releases/tag/2.20.0
 [2.21.0]: https://github.com/ergebnis/composer-normalize/releases/tag/2.21.0
 [2.22.0]: https://github.com/ergebnis/composer-normalize/releases/tag/2.22.0
+[2.23.0]: https://github.com/ergebnis/composer-normalize/releases/tag/2.23.0
 
 [81bc3a8...0.1.0]: https://github.com/ergebnis/composer-normalize/compare/81bc3a8...0.1.0
 [0.1.0...0.2.0]: https://github.com/ergebnis/composer-normalize/compare/0.1.0...0.2.0
@@ -729,7 +738,8 @@ For a full diff see [`81bc3a8...0.1.0`][81bc3a8...0.1.0].
 [2.19.0...2.20.0]: https://github.com/ergebnis/composer-normalize/compare/2.19.0...2.20.0
 [2.20.0...2.21.0]: https://github.com/ergebnis/composer-normalize/compare/2.20.0...2.21.0
 [2.21.0...2.22.0]: https://github.com/ergebnis/composer-normalize/compare/2.21.0...2.22.0
-[2.22.0...main]: https://github.com/ergebnis/composer-normalize/compare/2.22.0...main
+[2.22.0...2.23.0]: https://github.com/ergebnis/composer-normalize/compare/2.22.0...2.23.0
+[2.23.0...main]: https://github.com/ergebnis/composer-normalize/compare/2.23.0...main
 
 [#1]: https://github.com/ergebnis/composer-normalize/pull/1
 [#2]: https://github.com/ergebnis/composer-normalize/pull/2
@@ -821,6 +831,7 @@ For a full diff see [`81bc3a8...0.1.0`][81bc3a8...0.1.0].
 [#852]: https://github.com/ergebnis/composer-normalize/pull/852
 [#858]: https://github.com/ergebnis/composer-normalize/pull/858
 [#863]: https://github.com/ergebnis/composer-normalize/pull/863
+[#864]: https://github.com/ergebnis/composer-normalize/pull/864
 
 [@core23]: https://github.com/core23
 [@dependabot]: https://github.com/dependabot
diff --git a/composer.json b/composer.json
index 4c1454ca..ff2fbd97 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   "require": {
     "php": "^7.4 || ^8.0",
     "composer-plugin-api": "^2.0.0",
-    "ergebnis/json-normalizer": "^2.0.0",
+    "ergebnis/json-normalizer": "^2.1.0",
     "ergebnis/json-printer": "^3.2.0",
     "justinrainbow/json-schema": "^5.2.11",
     "localheinz/diff": "^1.1.1"
diff --git a/composer.lock b/composer.lock
index 4ad04bb3..565b4dd1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,20 +4,20 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "7e4c50203499acfe1fd8dd484c0af58f",
+    "content-hash": "4537ae71e5e752a21c74bd8e2c24494d",
     "packages": [
         {
             "name": "ergebnis/json-normalizer",
-            "version": "2.0.0",
+            "version": "2.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ergebnis/json-normalizer.git",
-                "reference": "37fd2798ee04574f3a5e029f929f4571da1ad223"
+                "reference": "2039eb11131a243b9204bf51219baa08935e6b1d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ergebnis/json-normalizer/zipball/37fd2798ee04574f3a5e029f929f4571da1ad223",
-                "reference": "37fd2798ee04574f3a5e029f929f4571da1ad223",
+                "url": "https://api.github.com/repos/ergebnis/json-normalizer/zipball/2039eb11131a243b9204bf51219baa08935e6b1d",
+                "reference": "2039eb11131a243b9204bf51219baa08935e6b1d",
                 "shasum": ""
             },
             "require": {
@@ -29,13 +29,13 @@
             },
             "require-dev": {
                 "ergebnis/data-provider": "^1.0.0",
-                "ergebnis/license": "^1.1.0",
+                "ergebnis/license": "^1.2.0",
                 "ergebnis/php-cs-fixer-config": "^3.4.0",
                 "fakerphp/faker": "^1.17.0",
                 "infection/infection": "~0.25.5",
                 "phpunit/phpunit": "^9.5.11",
                 "psalm/plugin-phpunit": "~0.16.1",
-                "vimeo/psalm": "^4.16.1"
+                "vimeo/psalm": "^4.17.0"
             },
             "type": "library",
             "autoload": {
@@ -69,7 +69,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-12-29T12:42:56+00:00"
+            "time": "2022-01-04T11:19:55+00:00"
         },
         {
             "name": "ergebnis/json-printer",