diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..2c48305
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 64ffe69..eec40c9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,8 +18,8 @@ jobs:
       pull-requests: write
       security-events: write
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
+      - uses: actions/setup-node@3235b876344d2a9aa001b8d1453c930bba69e610 # v3.9.1
         with:
           node-version: 18
           cache: npm
@@ -30,7 +30,7 @@ jobs:
         run: npm run build
 
       - name: Deploy to GitHub Pages
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./build