diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index 7f5ad38e..cc58c122 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@v5
+      - uses: actions/checkout@v6
       - uses: psf/black@stable
         with:
           version: "23.12.0"
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index e30f296c..311ad60d 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@v5
+      uses: actions/checkout@v6
       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 c0615967..7a22dc75 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@v5
+      - uses: actions/checkout@v6
         with:
           submodules: 'recursive'
       - name: Install packages
diff --git a/.github/workflows/pythonpackage-windows.yml b/.github/workflows/pythonpackage-windows.yml
index a4633de3..e1e2136a 100644
--- a/.github/workflows/pythonpackage-windows.yml
+++ b/.github/workflows/pythonpackage-windows.yml
@@ -15,7 +15,7 @@ jobs:
         python-version: ['3.11', '3.12', '3.13']
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         submodules: 'recursive'
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index f49c6820..1ee1e821 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', '3.12', '3.13']
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         submodules: 'recursive'
     - name: Set up Python ${{ matrix.python-version }}