diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 2b2499b..be2c811 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,12 +12,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
+        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Emulate PHP 8.3
+        run: composer config platform.php 8.3.999
+        if: matrix.php == '8.4'
+
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with: