diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ffe7667..ef7c08d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,3 +55,4 @@ jobs:
         env:
           SELENIUM_VERSION: ${{ matrix.selenium }}
           WEB_FIXTURES_BROWSER: firefox
+          TEST_MACHINE_BASE_PATH: ${{ github.workspace }}/vendor/mink/driver-testsuite/web-fixtures/