diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 93d5506..a56b492 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - run: |
         # Add Docker's official GPG key:
         sudo apt-get update