diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 4caf96a2..53edd980 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -27,7 +27,7 @@ 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 ae36c007..138903ee 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/dependency-update.yml b/.github/workflows/dependency-update.yml
index 307827cc..cafcd272 100644
--- a/.github/workflows/dependency-update.yml
+++ b/.github/workflows/dependency-update.yml
@@ -9,7 +9,7 @@ jobs:
   update:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/django.yml b/.github/workflows/django.yml
index 3acd40be..63c224b0 100644
--- a/.github/workflows/django.yml
+++ b/.github/workflows/django.yml
@@ -32,7 +32,7 @@ jobs:
         if: runner.os == 'Linux'
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Install Homebrew on Linux
       if: runner.os == 'Linux'
diff --git a/.github/workflows/review.yml b/.github/workflows/review.yml
index d9e96095..9cd6ca4c 100644
--- a/.github/workflows/review.yml
+++ b/.github/workflows/review.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: development_environment
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0