diff --git a/.github/workflows/_quality-gate.yml b/.github/workflows/_quality-gate.yml
index fecd5e1..f0211f2 100644
--- a/.github/workflows/_quality-gate.yml
+++ b/.github/workflows/_quality-gate.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Lint Markdown
         uses: DavidAnson/markdownlint-cli2-action@v23
diff --git a/.github/workflows/cli-ci.yml b/.github/workflows/cli-ci.yml
index 3512509..85787dd 100644
--- a/.github/workflows/cli-ci.yml
+++ b/.github/workflows/cli-ci.yml
@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/cli-release-pypi.yml b/.github/workflows/cli-release-pypi.yml
index 8841970..a0c7538 100644
--- a/.github/workflows/cli-release-pypi.yml
+++ b/.github/workflows/cli-release-pypi.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/links-scheduled.yml b/.github/workflows/links-scheduled.yml
index 6aa0275..a10958a 100644
--- a/.github/workflows/links-scheduled.yml
+++ b/.github/workflows/links-scheduled.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Restore lychee cache
         uses: actions/cache@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ddf7f54..0f16dca 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -78,7 +78,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -109,7 +109,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           ref: ${{ needs.resolve-version.outputs.version }}