diff --git a/tox.ini b/tox.ini
index 6c889816..bb6417f0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ deps=
     # TODO: Hotfix, remove when fixed https://github.com/aio-libs/aiohttp/issues/5107
     typing_extensions
     httpx
+    fastapi
 extras=
     yaml
     flask
@@ -48,6 +49,8 @@ commands=
     unit2 discover -s tests/unit -p test_*_py3.py
 
 [testenv:py35]
+deps=
+    unittest2
 extras=
     yaml
     flask