diff --git a/tox.ini b/tox.ini
index f129c622f..7e378974e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,4 +1,5 @@
 [testenv:tests_splinter]
+extras = zope.testbrowser, django, flask
 deps = -rrequirements/test.txt
 commands =
     pytest --ignore-flaky -v {posargs} tests/test_browser.py tests/test_element_list.py tests/test_request_handler.py tests/test_xpath_concat.py