diff --git a/.github/workflows/release-to-pypi.yml b/.github/workflows/release-to-pypi.yml
index bd98ad6d5..3ecc45d9d 100644
--- a/.github/workflows/release-to-pypi.yml
+++ b/.github/workflows/release-to-pypi.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
 
     - name: Check out the release commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v3
@@ -49,7 +49,7 @@ jobs:
     steps:
 
     - name: Check out the release commit
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v5
diff --git a/.github/workflows/run-core-traits-tests.yml b/.github/workflows/run-core-traits-tests.yml
index 74468f56d..639da8f74 100644
--- a/.github/workflows/run-core-traits-tests.yml
+++ b/.github/workflows/run-core-traits-tests.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/run-style-checks.yml b/.github/workflows/run-style-checks.yml
index 0b7f9531f..718ea029b 100644
--- a/.github/workflows/run-style-checks.yml
+++ b/.github/workflows/run-style-checks.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/run-traits-tests.yml b/.github/workflows/run-traits-tests.yml
index bdb3eb57f..a983ad76e 100644
--- a/.github/workflows/run-traits-tests.yml
+++ b/.github/workflows/run-traits-tests.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install Linux packages for Qt support
       run: |
         sudo apt-get update
diff --git a/.github/workflows/test-documentation-build.yml b/.github/workflows/test-documentation-build.yml
index 4a69a0014..9d7911a9c 100644
--- a/.github/workflows/test-documentation-build.yml
+++ b/.github/workflows/test-documentation-build.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
       uses: actions/setup-python@v5
       with: