diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..b00bfd0
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    groups:
+      actions:
+        patterns:
+          - "*"
diff --git a/.github/workflows/boj-build.yml b/.github/workflows/boj-build.yml
index b59be5f..c99d1db 100644
--- a/.github/workflows/boj-build.yml
+++ b/.github/workflows/boj-build.yml
@@ -1,19 +1,18 @@
+# SPDX-License-Identifier: PMPL-1.0-or-later
 name: BoJ Server Build Trigger
-
 on:
   push:
-    branches: [ main, master ]
+    branches: [main, master]
   workflow_dispatch:
-
 jobs:
   trigger-boj:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
-
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       - name: Trigger BoJ Server (Casket/ssg-mcp)
         run: |
           # Send a secure trigger to boj-server to build this repository
           curl -X POST "http://boj-server.local:7700/cartridges/ssg-mcp/invoke"             -H "Content-Type: application/json"             -d "{\"repo\": \"${{ github.repository }}\", \"branch\": \"${{ github.ref_name }}\", \"engine\": \"casket\\"}"}
         continue-on-error: true
+permissions: read-all
diff --git a/.github/workflows/workflow-linter.yml b/.github/workflows/workflow-linter.yml
index 9bb4d39..325fcc4 100644
--- a/.github/workflows/workflow-linter.yml
+++ b/.github/workflows/workflow-linter.yml
@@ -63,7 +63,7 @@ jobs:
           echo "=== Checking Action Pinning ==="
           # Find any uses: lines that don't have @SHA format
           # Pattern: uses: owner/repo@<40-char-hex>
-          unpinned=$(grep -rn "uses:" .github/workflows/ | \
+          unpinned=$(grep -rnE "^[[:space:]]+uses:" .github/workflows/ | \
             grep -v "@[a-f0-9]\{40\}" | \
             grep -v "uses: \./\|uses: docker://\|uses: actions/github-script" || true)