diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index a12225aa..1c3de8c0 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@v5
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/claude-issue-summarize.yml b/.github/workflows/claude-issue-summarize.yml
index da5e5366..30899977 100644
--- a/.github/workflows/claude-issue-summarize.yml
+++ b/.github/workflows/claude-issue-summarize.yml
@@ -14,7 +14,7 @@ jobs:
       issues: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Run Claude Issue summarize
         uses: ./.github/actions/claude-issue-summarize-action
diff --git a/.github/workflows/claude-issue-triage.yml b/.github/workflows/claude-issue-triage.yml
index 276fdff2..23109314 100644
--- a/.github/workflows/claude-issue-triage.yml
+++ b/.github/workflows/claude-issue-triage.yml
@@ -14,7 +14,7 @@ jobs:
       issues: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Run Claude Issue Triage
         uses: ./.github/actions/claude-issue-triage-action
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 6181f3b6..d005e4f6 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -31,7 +31,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/deploy-docs.yaml b/.github/workflows/deploy-docs.yaml
index ddf02305..5c1e6bc7 100644
--- a/.github/workflows/deploy-docs.yaml
+++ b/.github/workflows/deploy-docs.yaml
@@ -20,7 +20,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0  # otherwise, you will fail to push refs to dest repo
 
diff --git a/.github/workflows/dragon-ai.yml b/.github/workflows/dragon-ai.yml
index f7fba5ed..4e1b40a8 100644
--- a/.github/workflows/dragon-ai.yml
+++ b/.github/workflows/dragon-ai.yml
@@ -26,7 +26,7 @@ jobs:
       result: ${{ steps.check.outputs.result }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
         
       - name: Check for qualifying mention
         id: check
@@ -102,7 +102,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           token: ${{ secrets.PAT_FOR_PR }}  # Use PAT for checkout to allow committing later
diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 87333d2b..6be9b040 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -26,7 +26,7 @@ jobs:
 
       # https://github.com/actions/checkout
       - name: Check out repository
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/pypi-publish.yaml b/.github/workflows/pypi-publish.yaml
index d982319e..d22b513d 100644
--- a/.github/workflows/pypi-publish.yaml
+++ b/.github/workflows/pypi-publish.yaml
@@ -28,7 +28,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Check out repository
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5
         with:
           persist-credentials: false