diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..8004983
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,7 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 5
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..92203db
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,32 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: "53 4 * * 5"
+
+jobs:
+  analyze:
+    name: Analyze Python
+    permissions:
+      contents: read
+      security-events: write
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: python
+          queries: security-extended
+
+      - name: Perform CodeQL analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:python"
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index 604582a..9fff055 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -6,11 +6,10 @@ on:
   pull_request:
     branches: [main]
 
-permissions:
-  contents: read
-
 jobs:
   validate-repository:
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
     timeout-minutes: 5