diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 495636d..64c4642 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     name: Lint & Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -44,7 +44,7 @@ jobs:
     name: Type Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -66,7 +66,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [lint, typecheck]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: test
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
diff --git a/.github/workflows/reusable-node-ci.yml b/.github/workflows/reusable-node-ci.yml
index da55d1a..70bb6a0 100644
--- a/.github/workflows/reusable-node-ci.yml
+++ b/.github/workflows/reusable-node-ci.yml
@@ -48,7 +48,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
diff --git a/.github/workflows/reusable-python-ci.yml b/.github/workflows/reusable-python-ci.yml
index 1f90f7e..ece9c53 100644
--- a/.github/workflows/reusable-python-ci.yml
+++ b/.github/workflows/reusable-python-ci.yml
@@ -48,7 +48,7 @@ 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/reusable-validate.yml b/.github/workflows/reusable-validate.yml
index 1cdeeeb..30d1fd7 100644
--- a/.github/workflows/reusable-validate.yml
+++ b/.github/workflows/reusable-validate.yml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Validate Skills
         if: inputs.validate-skills
diff --git a/.github/workflows/validate-skills.yml b/.github/workflows/validate-skills.yml
index b5f0b95..058e01d 100644
--- a/.github/workflows/validate-skills.yml
+++ b/.github/workflows/validate-skills.yml
@@ -15,7 +15,7 @@ jobs:
   validate-skills:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Validate SKILL.md files
         run: |