diff --git a/.github/workflows/diagnostics.yml b/.github/workflows/diagnostics.yml
index 04d9398..229cf1d 100644
--- a/.github/workflows/diagnostics.yml
+++ b/.github/workflows/diagnostics.yml
@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: PHP ${{ matrix.php }} Pull source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0