diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index c09aec8..732f4da 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -26,7 +26,10 @@ jobs:
         coverage: none
 
     - name: Install Dependencies
-      run: composer update --prefer-stable --no-interaction --no-progress --ansi
+      run: composer update --${{ matrix.dependency-version }} --no-interaction --no-progress --ansi
+
+    - name: Audit
+      run: composer audit --locked --no-interaction
 
     - name: Types
       run: composer test:types
diff --git a/composer.json b/composer.json
index fce107a..11c35da 100644
--- a/composer.json
+++ b/composer.json
@@ -24,6 +24,7 @@
     ],
     "require": {
         "php": "^8.4",
+        "nikic/php-parser": "^5.9",
         "rector/rector": "^2.6.1"
     },
     "require-dev": {