diff --git a/package.json b/package.json
index 439d946e65..9b8cfb6299 100644
--- a/package.json
+++ b/package.json
@@ -88,7 +88,8 @@
     "preset": "jest-puppeteer",
     "setupFilesAfterEnv": [
       "./jest.setup.js"
-    ]
+    ],
+    "testURL": "https://design-system.service.gov.uk"
   },
   "browserslist": [
     "last 2 versions",