diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index f7def10..9ddbcbb 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 0b5cbdc..960d51c 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -12,7 +12,7 @@ jobs:
         python-version: ["3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/dev_test.yml b/.github/workflows/dev_test.yml
index cf8cf2c..cae09b7 100644
--- a/.github/workflows/dev_test.yml
+++ b/.github/workflows/dev_test.yml
@@ -14,7 +14,7 @@ jobs:
         python-version: ["3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/formatting.yml b/.github/workflows/formatting.yml
index 4a18042..810267c 100644
--- a/.github/workflows/formatting.yml
+++ b/.github/workflows/formatting.yml
@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest]
         tool: ["black", "isort"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/no_byte_order_mark.yml b/.github/workflows/no_byte_order_mark.yml
index 75debe8..ecbdba2 100644
--- a/.github/workflows/no_byte_order_mark.yml
+++ b/.github/workflows/no_byte_order_mark.yml
@@ -10,6 +10,6 @@ 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 5bb9612..d1b0cd2 100644
--- a/.github/workflows/packaging_test.yml
+++ b/.github/workflows/packaging_test.yml
@@ -12,7 +12,7 @@ jobs:
         python-version: ["3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/pythonlint.yml b/.github/workflows/pythonlint.yml
index d539c38..dd0b77c 100644
--- a/.github/workflows/pythonlint.yml
+++ b/.github/workflows/pythonlint.yml
@@ -14,7 +14,7 @@ jobs:
         os: [ubuntu-latest]
         linter-env: ["linting", "type_check", "spell_check"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 6e61824..c839087 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -12,7 +12,7 @@ jobs:
         python-version: ["3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with: