diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 000000000..2c48305b7
--- /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/markdownlint.yml b/.github/workflows/markdownlint.yml
index b539b142b..2fee44c82 100644
--- a/.github/workflows/markdownlint.yml
+++ b/.github/workflows/markdownlint.yml
@@ -21,7 +21,7 @@ jobs:
       statuses: write
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Use Node.js
         uses: actions/setup-node@c2ac33f2c62f978d6c944d9648125a294e56dc0b
         with: