diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8e48bed..1063178 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -66,32 +66,3 @@ jobs:
 
     - name: Run test suite
       run: composer run-script test
-
-  mystery:
-    runs-on: ubuntu-latest
-    container: setupphp/node@sha256:de8e0c4f86578f69f94e5914613aab43784baff51f1f04e3569d5d76def6f968
-
-    strategy:
-      matrix:
-        php-version:
-          - "8.1"
-          - "8.2"
-
-    steps:
-    - uses: "actions/checkout@v3"
-    - uses: "shivammathur/setup-php@v2"
-      with:
-        php-version: ${{ matrix.php-version }}
-
-    - name: Cache Composer packages
-      id: composer-cache
-      uses: actions/cache@v3
-      with:
-        path: vendor
-        key: php-outdated
-
-    - name: Install Composer dependencies
-      run: composer install --prefer-dist --no-progress
-
-    - name: Run test suite
-      run: composer run-script test