diff --git a/.github/workflows/update-test-matrix.yaml b/.github/workflows/update-test-matrix.yaml
index 658a5c4e..26c63469 100644
--- a/.github/workflows/update-test-matrix.yaml
+++ b/.github/workflows/update-test-matrix.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5