diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8dec3a546..17b425c78 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,6 +12,7 @@ on:
 env:
   DRUPAL_TESTING_COMPOSER_PROJECT: thunder/thunder-project
   DRUPAL_TESTING_COMPOSER_PROJECT_VERSION: "^4.0@stable"
+  DRUPAL_TESTING_CLEANUP: false
   DRUPAL_TESTING_DATABASE_USER: root
   DRUPAL_TESTING_DATABASE_PASSWORD: root
   DRUPAL_TESTING_TEST_DUMP_FILE: site-dump.tar.gz
@@ -28,6 +29,7 @@ env:
   DRUPAL_TESTING_PARALLEL_TESTING: false
   MINK_DRIVER_ARGS_WEBDRIVER: '["chrome", {"browserName":"chrome","chromeOptions":{"args":["--disable-gpu","--headless", "--no-sandbox", "--disable-dev-shm-usage"]}}, "http://127.0.0.1:9515"]'
   SIMPLETEST_BASE_URL: http://thunder-testing:8888
+  BROWSERTEST_OUTPUT_DIRECTORY: /tmp
   SKIP_TEST_CLEANUP: true
   # The following variable set the version that the upgrade test starts with.
   DRUPAL_TESTING_UPGRADE_COMPOSER_PROJECT_VERSION: 3.0.12
@@ -168,6 +170,13 @@ jobs:
           THUNDER_TEST_CHUNK: ${{ matrix.CHUNK }}
           DRUPAL_TESTING_TEST_PATH: /tmp/test/thunder/install/docroot/profiles/contrib/thunder/tests/src/TestSuites/ThunderTestSuite.php
 
+      - name: Upload test output
+        uses: actions/upload-artifact@v4
+        if: success() || failure()
+        with:
+          name: text-max-output-${{ matrix.CHUNK }}-${{ matrix.PHP_VERSION }}
+          path: /tmp/test/thunder/install/docroot/sites/simpletest/browser_output/
+
   test-upgrade:
 
     runs-on: ubuntu-24.04