diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f7ed806..5cc622f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     name: Lint & Format check
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -52,7 +52,7 @@ jobs:
     name: Type check
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -78,7 +78,7 @@ jobs:
     name: Security Check
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -145,7 +145,7 @@ jobs:
     name: Unit tests Python ${{ matrix.python-version }} on ${{ matrix.os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -208,7 +208,7 @@ jobs:
     name: Integration Tests on Python 3.13 and ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -255,7 +255,7 @@ jobs:
     if: always() && needs.unit-tests.result == 'success'
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download coverage from Python 3.13
         uses: actions/download-artifact@v6
@@ -284,7 +284,7 @@ jobs:
     needs: [lint, type-check]
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install uv
       uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index cfc0d6e..71f3005 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
       actions: read # For checkout action
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -70,7 +70,7 @@ jobs:
   #     url: https://pypi.org/p/smppai
   #   steps:
   #     - name: Checkout repository
-  #       uses: actions/checkout@v5
+  #       uses: actions/checkout@v6
   #       with:
   #         ref: main
 
diff --git a/.github/workflows/validate-commits.yml b/.github/workflows/validate-commits.yml
index a1ba21c..bcf85c2 100644
--- a/.github/workflows/validate-commits.yml
+++ b/.github/workflows/validate-commits.yml
@@ -10,7 +10,7 @@ jobs:
     name: Validate Conventional Commits
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0