diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
index f329b68..265d220 100644
--- a/.github/workflows/black.yml
+++ b/.github/workflows/black.yml
@@ -6,7 +6,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: "3.12"
diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 32c3840..5a031c1 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 64a3e5b..c188310 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,7 +26,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/deploy_primary.yml b/.github/workflows/deploy_primary.yml
index dbad65f..a1b9556 100644
--- a/.github/workflows/deploy_primary.yml
+++ b/.github/workflows/deploy_primary.yml
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     
 
     - name: Configure AWS credentials
diff --git a/.github/workflows/deploy_release_software.yml b/.github/workflows/deploy_release_software.yml
index a6b6812..f811d17 100644
--- a/.github/workflows/deploy_release_software.yml
+++ b/.github/workflows/deploy_release_software.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
diff --git a/.github/workflows/deploy_store.yml b/.github/workflows/deploy_store.yml
index 9972735..d1550c6 100644
--- a/.github/workflows/deploy_store.yml
+++ b/.github/workflows/deploy_store.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Configure AWS credentials
       uses: aws-actions/configure-aws-credentials@v4
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index b8cb119..c6cca81 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -15,7 +15,7 @@ jobs:
     permissions:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/run-pytest.yml b/.github/workflows/run-pytest.yml
index 637e616..aad78a5 100644
--- a/.github/workflows/run-pytest.yml
+++ b/.github/workflows/run-pytest.yml
@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5