diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index e33c5be..c7f8f8e 100644
--- a/.github/workflows/black.yml
+++ b/.github/workflows/black.yml
@@ -6,7 +6,7 @@ jobs:
   black-code-style:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: psf/black@stable
         with:
           version: "23.3.0"
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index c69b37f..9245f75 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 2508ab5..ee08a27 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -19,7 +19,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: 'recursive'
       - name: Install packages
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 9929408..5cda9ae 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -18,7 +18,7 @@ jobs:
         python-version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: 'recursive'
     - name: Set up Python ${{ matrix.python-version }}