diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0eb273b..de41ab9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: opensafely-core/research-action@v2
 
   tag-new-version:
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Tag new version
         uses: mathieudutour/github-tag-action@a22cf08638b34d5badda920f9daf6e72c477b07b
         with:
diff --git a/.github/workflows/test_runner.yaml b/.github/workflows/test_runner.yaml
index a3f3dc4..c8f90b4 100644
--- a/.github/workflows/test_runner.yaml
+++ b/.github/workflows/test_runner.yaml
@@ -12,6 +12,6 @@ jobs:
     name: Test the project can run, using dummy data
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Test that the project is runnable
       uses: opensafely-core/research-action@v2