diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da21c4d..b9ef529 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
           - id: protoc
             name: Check protobuf files match
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         id: python
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 0b0d533..3997b83 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -25,7 +25,7 @@ jobs:
     steps:
       -
         name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Log in to docker hub
         uses: docker/login-action@v3.0.0
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 792c566..bae8cff 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -20,7 +20,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       # Update version number in setup.py
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Calculate version
         id: version
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 158c0dd..bce267f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
     name: Build and publish to PyPi
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with: