diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 72b6c6c276..e6902d4e4e 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -28,7 +28,7 @@ jobs:
       matrix:
         php-versions: ['8.1']
         databases: ['sqlite', 'mysql', 'pgsql']
-        server-versions: ['master']
+        server-versions: ['stable31']
 
     name: php${{ matrix.php-versions }}-${{ matrix.databases }}-${{ matrix.server-versions }}
 
@@ -63,7 +63,6 @@ jobs:
           auth_header="$(git config --local --get http.https://github.com/.extraheader)"
           git submodule sync --recursive
           git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive --depth=1
-          cd build/integration && composer require --dev phpunit/phpunit:~9
 
       - name: Checkout app
         uses: actions/checkout@v4.2.2