diff --git a/.github/workflows/check-general-formatting.yml b/.github/workflows/check-general-formatting.yml
index 96b7e36..4b55123 100644
--- a/.github/workflows/check-general-formatting.yml
+++ b/.github/workflows/check-general-formatting.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install editorconfig-checker
         uses: editorconfig-checker/action-editorconfig-checker@v2
diff --git a/.github/workflows/check-license.yml b/.github/workflows/check-license.yml
index 5da75f1..cd8fcd0 100644
--- a/.github/workflows/check-license.yml
+++ b/.github/workflows/check-license.yml
@@ -66,7 +66,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Ruby
         uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/check-markdown.yml b/.github/workflows/check-markdown.yml
index 9cdc5bb..f592321 100644
--- a/.github/workflows/check-markdown.yml
+++ b/.github/workflows/check-markdown.yml
@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Initialize markdownlint-cli problem matcher
         uses: xt0rted/markdownlint-problem-matcher@v3
@@ -53,7 +53,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Determine whether only modified files should be checked
         id: check-modified
diff --git a/.github/workflows/check-prettier-formatting.yml b/.github/workflows/check-prettier-formatting.yml
index f6006c0..6673d80 100644
--- a/.github/workflows/check-prettier-formatting.yml
+++ b/.github/workflows/check-prettier-formatting.yml
@@ -207,7 +207,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Prettier
         run: sudo npm install --global prettier
diff --git a/.github/workflows/check-python.yml b/.github/workflows/check-python.yml
index f8a5cee..ec6f2ce 100644
--- a/.github/workflows/check-python.yml
+++ b/.github/workflows/check-python.yml
@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install flake8
         run: |
@@ -57,7 +57,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/check-toc.yml b/.github/workflows/check-toc.yml
index 7785ec9..6d68129 100644
--- a/.github/workflows/check-toc.yml
+++ b/.github/workflows/check-toc.yml
@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install markdown-toc
         run: sudo npm install --global markdown-toc
diff --git a/.github/workflows/check-workflows.yml b/.github/workflows/check-workflows.yml
index e4f842d..46059b1 100644
--- a/.github/workflows/check-workflows.yml
+++ b/.github/workflows/check-workflows.yml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download JSON schema for GitHub Actions workflows
         id: download-schema
diff --git a/.github/workflows/check-yaml.yml b/.github/workflows/check-yaml.yml
index 08f095f..0883302 100644
--- a/.github/workflows/check-yaml.yml
+++ b/.github/workflows/check-yaml.yml
@@ -63,7 +63,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check YAML
         continue-on-error: ${{ matrix.configuration.continue-on-error }}
diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index 650de56..c79cdf4 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Spell check
         uses: codespell-project/actions-codespell@v2