diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5aa94a4..4fd4d73 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -42,7 +42,7 @@ jobs:
         python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -71,7 +71,7 @@ jobs:
     needs: [lint-format, test]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 4a7c2ea..909c578 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 44bb592..9410c99 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Label PR based on files
         uses: actions/labeler@v6
diff --git a/.github/workflows/merge-bot.yml b/.github/workflows/merge-bot.yml
index 00248a1..4e5af2c 100644
--- a/.github/workflows/merge-bot.yml
+++ b/.github/workflows/merge-bot.yml
@@ -401,7 +401,7 @@ jobs:
 
       - name: Checkout PR branch
         if: steps.check_perms.outputs.has_permission == 'true'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: ${{ steps.pr_info.outputs.head_repo }}
           ref: ${{ steps.pr_info.outputs.head_branch }}
diff --git a/.github/workflows/pre-commit-autoupdate.yml b/.github/workflows/pre-commit-autoupdate.yml
index 0792d43..0ad9163 100644
--- a/.github/workflows/pre-commit-autoupdate.yml
+++ b/.github/workflows/pre-commit-autoupdate.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bdad46e..646c2b6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2
 
@@ -125,7 +125,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Get version
         id: version
diff --git a/.github/workflows/validate-release.yml b/.github/workflows/validate-release.yml
index c37e443..e0c5d39 100644
--- a/.github/workflows/validate-release.yml
+++ b/.github/workflows/validate-release.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2  # Need previous commit to compare