diff --git a/wagtail/tests/settings.py b/wagtail/tests/settings.py
index 03f2d72e88..3366af8189 100644
--- a/wagtail/tests/settings.py
+++ b/wagtail/tests/settings.py
@@ -13,6 +13,9 @@ DATABASES = {
     'default': {
         'ENGINE': os.environ.get('DATABASE_ENGINE', 'django.db.backends.sqlite3'),
         'NAME': os.environ.get('DATABASE_NAME', 'wagtail'),
+        'USER': os.environ.get('DATABASE_USER', None),
+        'PASSWORD': os.environ.get('DATABASE_PASS', None),
+        'HOST': os.environ.get('DATABASE_HOST', None),
     }
 }