diff --git a/.github/workflows/code_quality.yml b/.github/workflows/code_quality.yml
index ab5113f..10f149a 100644
--- a/.github/workflows/code_quality.yml
+++ b/.github/workflows/code_quality.yml
@@ -32,7 +32,7 @@ jobs:
           target_directory: 'src'
   phpstan:
     name: PHPStan
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - name: Check out code into the workspace
         uses: actions/checkout@v2