diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 755e4b4..0dde0a1 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: [ '8.3', '8.4', '8.5' ]
+        php-version: [ '8.4', '8.5' ]
 
     name: Run tests on PHP v${{ matrix.php-version }}
 
diff --git a/composer.json b/composer.json
index 3e59d93..00468d5 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     "source": "https://github.com/aternosorg/php-model"
   },
   "require": {
-    "php": ">=8.3",
+    "php": ">=8.4",
     "ext-json": "*",
     "psr/http-client": "^1.0",
     "psr/http-factory": "^1.1"