diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
deleted file mode 100644
index e5b2129e..00000000
--- a/.github/workflows/codeql.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-name: "Periodic CodeQL"
-
-on:
-  schedule:
-    # Weekly scan so newly-disclosed query packs catch existing code.
-    - cron: "27 4 * * 1"
-  # Allow manual runs from the Actions tab in the GitHub UI.
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  analyze:
-    name: Analyze (${{ matrix.language }})
-    runs-on: ubuntu-latest
-    permissions:
-      # Required to upload results to the GitHub code scanning dashboard.
-      security-events: write
-      # Required to read the repository contents.
-      contents: read
-      actions: read
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - language: csharp
-            build-mode: none
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4.37.0
-        with:
-          languages: ${{ matrix.language }}
-          build-mode: ${{ matrix.build-mode }}
-          # Run the standard plus security-extended query suite for deeper coverage.
-          queries: security-extended
-
-      - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4.37.0
-        with:
-          category: "/language:${{ matrix.language }}"