diff --git a/.github/workflows/php-syntax.yml b/.github/workflows/php-syntax.yml
index 3695bd5..575c8f0 100644
--- a/.github/workflows/php-syntax.yml
+++ b/.github/workflows/php-syntax.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
 
     steps:
       - name: Checkout
diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 2565b20..2c5d546 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
         include:
           - php: '7.3'
             os: ubuntu-latest
@@ -70,4 +70,4 @@ jobs:
         if: ${{ matrix.report }}
         run: |
           vendor/bin/phpunit --verbose --coverage-clover=tmp/coverage/report-xml/php-coverage1.xml
-          bash <(curl -s https://codecov.io/bash);
\ No newline at end of file
+          bash <(curl -s https://codecov.io/bash);
diff --git a/composer.json b/composer.json
index 80f4f88..336cfb0 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "source": "https://github.com/gravitypdf/upload"
   },
   "require": {
-    "php": "^7.3 || ~8.0.0 || ~8.1.0 || ~8.2.0",
+    "php": "^7.3 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0",
     "ext-fileinfo": "*"
   },
   "require-dev": {