diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index fffa3c5..3757e9f 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.1'
+          php-version: '8.3'
           tools: composer:v2, cs2pr
 
       - name: Cache PHP dependencies