diff --git a/.github/workflows/automerge.yml b/.github/workflows/automerge.yml
index 2f874f5e..b7252c9e 100644
--- a/.github/workflows/automerge.yml
+++ b/.github/workflows/automerge.yml
@@ -13,7 +13,7 @@ jobs:
       repository-projects: write
     if: github.actor == 'dependabot[bot]'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: gh pr merge ${{ github.event.pull_request.html_url }} --auto --squash
       - run: gh pr review ${{ github.event.pull_request.html_url }} --approve
     env:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 406508d5..570a567a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: npm ci --ignore-scripts
       - run: npm run build
       - run: npm run test
@@ -30,7 +30,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: npm ci --ignore-scripts
       - run: npm run build
       - run: npm run lint
@@ -46,7 +46,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: npm ci
       - run: npm run spec-turtle
       - run: npm run spec-ntriples
@@ -56,7 +56,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 14.x
@@ -97,7 +97,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 22.x