diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 155743c..832f864 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -6,11 +6,11 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         os: [ubuntu-latest, windows-latest]
         php: [7.4, 8.0]
-        stability: [prefer-lowest, prefer-stable]
+        stability: [prefer-stable]
 
     name: P${{ matrix.php }} - ${{ matrix.stability }} - ${{ matrix.os }}
 
@@ -33,4 +33,4 @@ jobs:
         run: composer update --${{ matrix.stability }} --prefer-dist --no-interaction
 
       - name: Execute tests
-        run: vendor/bin/phpunit
+        run: vendor/bin/phpunit tests/Feature/Server/AdminTest.php