diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index e64ce4c2f..ddfff8bfb 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -1,34 +1,71 @@
-# copied from microsoft/TypeScript; see that file for boilerplate commentary
-# (which was certainly copied from somewhere else)
-name: "Code scanning - action"
+name: 'Code Scanning - Action'
 
 on:
   push:
+    branches:
+      - main
   pull_request:
+    branches:
+      - main
   schedule:
-    - cron: '0 19 * * 0'
+    #        ┌───────────── minute (0 - 59)
+    #        │  ┌───────────── hour (0 - 23)
+    #        │  │ ┌───────────── day of the month (1 - 31)
+    #        │  │ │ ┌───────────── month (1 - 12 or JAN-DEC)
+    #        │  │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
+    #        │  │ │ │ │
+    #        │  │ │ │ │
+    #        │  │ │ │ │
+    #        *  * * * *
+    - cron: '30 1 * * 0'
+
+permissions:
+  contents: read
+
+# Ensure scripts are run with pipefail. See:
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
+defaults:
+  run:
+    shell: bash
 
 jobs:
   CodeQL-Build:
-
+    # CodeQL runs on ubuntu-latest, windows-latest, and macos-latest
     runs-on: ubuntu-latest
     if: github.repository == 'microsoft/TypeScript-DOM-lib-generator'
 
+    permissions:
+      # required for all workflows
+      security-events: write
+
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
-      with:
-        # We must fetch at least the immediate parents so that if this is
-        # a pull request then we can checkout the head.
-        fetch-depth: 2
-
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        config-file: ./.github/codeql/codeql-configuration.yml
-
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      - name: Checkout repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@e8893c57a1f3a2b659b6b55564fdfdbbd2982911 # v3.24.0
+        with:
+          config-file: ./.github/codeql/codeql-configuration.yml
+        # Override language selection by uncommenting this and choosing your languages
+        # with:
+        #   languages: go, javascript, csharp, python, cpp, java
+
+      # Autobuild attempts to build any compiled languages (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below).
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@e8893c57a1f3a2b659b6b55564fdfdbbd2982911 # v3.24.0
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+      # ✏️ If the Autobuild fails above, remove it and uncomment the following
+      #    three lines and modify them (or add more) to build your code if your
+      #    project uses a compiled language
+
+      #- run: |
+      #     make bootstrap
+      #     make release
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@e8893c57a1f3a2b659b6b55564fdfdbbd2982911 # v3.24.0
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