diff --git a/composer.json b/composer.json
index ec53afe..ff9b4be 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
     "php": ">=8.1.0",
     "guzzlehttp/guzzle": "7.8.1",
     "guzzlehttp/uri-template": "v1.0.3",
-    "netresearch/jsonmapper": "4.2.0",
+    "netresearch/jsonmapper": "4.4.1",
     "lstrojny/functional-php": "1.17.0"
   },
   "require-dev": {
diff --git a/composer.lock b/composer.lock
index b35cd5f..754ae5b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "941eddcd449bd79fdd9876d7d5865cd5",
+    "content-hash": "1c3c00327811483af0bb963c876d7b04",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -573,16 +573,16 @@
         },
         {
             "name": "netresearch/jsonmapper",
-            "version": "v4.2.0",
+            "version": "v4.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/cweiske/jsonmapper.git",
-                "reference": "f60565f8c0566a31acf06884cdaa591867ecc956"
+                "reference": "132c75c7dd83e45353ebb9c6c9f591952995bbf0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/cweiske/jsonmapper/zipball/f60565f8c0566a31acf06884cdaa591867ecc956",
-                "reference": "f60565f8c0566a31acf06884cdaa591867ecc956",
+                "url": "https://api.github.com/repos/cweiske/jsonmapper/zipball/132c75c7dd83e45353ebb9c6c9f591952995bbf0",
+                "reference": "132c75c7dd83e45353ebb9c6c9f591952995bbf0",
                 "shasum": ""
             },
             "require": {
@@ -593,7 +593,7 @@
                 "php": ">=7.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "~7.5 || ~8.0 || ~9.0",
+                "phpunit/phpunit": "~7.5 || ~8.0 || ~9.0 || ~10.0",
                 "squizlabs/php_codesniffer": "~3.5"
             },
             "type": "library",
@@ -618,9 +618,9 @@
             "support": {
                 "email": "cweiske@cweiske.de",
                 "issues": "https://github.com/cweiske/jsonmapper/issues",
-                "source": "https://github.com/cweiske/jsonmapper/tree/v4.2.0"
+                "source": "https://github.com/cweiske/jsonmapper/tree/v4.4.1"
             },
-            "time": "2023-04-09T17:37:40+00:00"
+            "time": "2024-01-31T06:18:54+00:00"
         },
         {
             "name": "psr/http-client",