diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 361dbff..d711974 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 867f52a..c062479 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -5,7 +5,7 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/formatting.yml b/.github/workflows/formatting.yml
index 3b069d7..f9fc3cb 100644
--- a/.github/workflows/formatting.yml
+++ b/.github/workflows/formatting.yml
@@ -8,7 +8,7 @@ jobs:
       matrix:
         tool: ["black", "isort"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/no_byte_order_mark.yml b/.github/workflows/no_byte_order_mark.yml
index e81912c..329950e 100644
--- a/.github/workflows/no_byte_order_mark.yml
+++ b/.github/workflows/no_byte_order_mark.yml
@@ -11,6 +11,6 @@ jobs:
   bom-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: arma-actions/bom-check@v1
         name: Check for BOM
diff --git a/.github/workflows/packaging_test.yml b/.github/workflows/packaging_test.yml
index 737b177..60959e0 100644
--- a/.github/workflows/packaging_test.yml
+++ b/.github/workflows/packaging_test.yml
@@ -5,7 +5,7 @@ jobs:
   check_packaging:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 9bc4329..768d588 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -16,7 +16,7 @@ jobs:
      if: startsWith(github.ref, 'refs/tags/v')
      runs-on: ubuntu-latest
      steps:
-       - uses: actions/checkout@v5
+       - uses: actions/checkout@v6
        - name: Set up Python
          uses: actions/setup-python@v6
          with:
@@ -40,7 +40,7 @@ jobs:
          id-token: write
      needs: tests
      steps:
-       - uses: actions/checkout@v5
+       - uses: actions/checkout@v6
        - name: Set up Python
          uses: actions/setup-python@v6
          with:
diff --git a/.github/workflows/pythonlint.yml b/.github/workflows/pythonlint.yml
index 376fe75..55dcddf 100644
--- a/.github/workflows/pythonlint.yml
+++ b/.github/workflows/pythonlint.yml
@@ -9,7 +9,7 @@ jobs:
       matrix:
         linter-env: ["linting", "type_check"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index ef814b1..379f8e1 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -9,7 +9,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
         with: