diff --git a/.github/workflows/diagnostics.yml b/.github/workflows/diagnostics.yml
index 22b73c5..2a88c43 100644
--- a/.github/workflows/diagnostics.yml
+++ b/.github/workflows/diagnostics.yml
@@ -33,7 +33,7 @@ jobs:
             phpcq_install: 'update'
     steps:
       - name: Pull source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2