diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 9928dec..a960e11 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -36,7 +36,7 @@ jobs:
         uses: "ramsey/composer-install@v1"
 
       - name: Setup Test Environment
-        run: bash bin/install-wp-tests.sh wordpress_test root root 127.0.0.1 ${{ matrix.wp-version }}
+        run: bash bin/install-wp-tests.sh wordpress_test root root localhost ${{ matrix.wp-version }}
 
       - name: Unit Testing
         run: ./vendor/bin/phpunit