diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8b56520..3733d83 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
       fail-fast: false
     env:
       MATRIX_PHP: ${{ matrix.php }}
@@ -31,7 +31,7 @@ jobs:
         with:
           coverage: "xdebug"
           php-version: "${{ matrix.php }}"
-          extensions: zip
+          extensions: gd, zip
           tools: composer
           ini-values: error_reporting=-1, display_errors=On
       - name: Install dependencies
diff --git a/docker-compose.yml b/docker-compose.yml
index 97c8b06..8c5b909 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,15 @@
 version: "3"
 services:
 
+  php8.3:
+    tty: true
+    build:
+      context: .
+      args:
+        - PHP_VERSION=8.3
+    volumes:
+      - .:/var/www/html
+
   php8.2:
     tty: true
     build: