diff --git a/.github/workflows/agent-ci-feedback.yml b/.github/workflows/agent-ci-feedback.yml
index d21f3225..2602ae0e 100644
--- a/.github/workflows/agent-ci-feedback.yml
+++ b/.github/workflows/agent-ci-feedback.yml
@@ -27,7 +27,7 @@ jobs:
           private-key: ${{ secrets.AGENT_APP_PRIVATE_KEY }}
 
       - name: Post CI failure feedback to agent PR
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |
diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index d9f87fda..0ea25707 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -29,7 +29,7 @@ jobs:
     steps:
       - name: Determine if review should run
         id: check
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             let prNumber;
@@ -195,7 +195,7 @@ jobs:
           private-key: ${{ secrets.AGENT_APP_PRIVATE_KEY }}
 
       - name: Trigger agent feedback if needed
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           github-token: ${{ steps.app-token.outputs.token }}
           script: |
diff --git a/.github/workflows/pr-validation.yml b/.github/workflows/pr-validation.yml
index 7aea9fdc..40d6ba6f 100644
--- a/.github/workflows/pr-validation.yml
+++ b/.github/workflows/pr-validation.yml
@@ -15,7 +15,7 @@ jobs:
     
     steps:
     - name: Check PR title format
-      uses: actions/github-script@v8
+      uses: actions/github-script@v9
       with:
         script: |
           const title = context.payload.pull_request.title;
@@ -212,7 +212,7 @@ jobs:
         fetch-depth: 0
     
     - name: Add size labels
-      uses: actions/github-script@v8
+      uses: actions/github-script@v9
       with:
         script: |
           const { data: pr } = await github.rest.pulls.get({
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index a9c02098..6bb96b6c 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -50,7 +50,7 @@ jobs:
     
     - name: Create issue for vulnerabilities
       if: failure()
-      uses: actions/github-script@v8
+      uses: actions/github-script@v9
       with:
         script: |
           const title = '🚨 Security vulnerabilities found in Rust dependencies';