diff --git a/.github/workflows/nightly-tests.yml b/.github/workflows/nightly-tests.yml
deleted file mode 100644
index 506316fd..00000000
--- a/.github/workflows/nightly-tests.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: Nightly Tests
-
-on:
-  push:
-  pull_request:
-  schedule:
-    - cron: '0 */12 * * *'
-
-jobs:
-  ci:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        php: ['8.1']
-        phpunit-branch: [10.0.x-dev]
-
-    name: PHP ${{ matrix.php }} - ${{ matrix.os }} - ${{ matrix.phpunit-branch }}
-
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-
-    - name: Setup PHP
-      uses: shivammathur/setup-php@v2
-      with:
-        php-version: ${{ matrix.php }}
-        tools: composer:v2
-        coverage: none
-
-    - name: Setup Problem Matchers
-      run: |
-        echo "::add-matcher::${{ runner.tool_cache }}/php.json"
-        echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
-
-    - name: Install PHP dependencies with phpunit/phpunit:${{ matrix.phpunit-branch }}
-      run: composer require phpunit/phpunit:${{ matrix.phpunit-branch }} --ansi --no-interaction --no-progress
-
-    - name: Unit Tests
-      run: composer test:unit
-
-    - name: Unit Tests in Parallel
-      run: composer test:parallel
-      if: startsWith(matrix.os, 'windows') != true
-
-    - name: Integration Tests
-      run: composer test:integration