diff --git a/.github/workflows/publish-docs.yml b/.github/workflows/publish-docs.yml
index 560da4b..032373d 100644
--- a/.github/workflows/publish-docs.yml
+++ b/.github/workflows/publish-docs.yml
@@ -16,8 +16,8 @@ jobs:
         python-version: [3.7]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
+    - uses: actions/checkout@v4
     - run: |
         git fetch origin gh-pages
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bf27abb..bde1cef 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,7 +11,7 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
       - name: Setup Node.js
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index a8b546e..f28f380 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -18,7 +18,7 @@ jobs:
       DEBUG_PROXY: 1
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v1
         with: