diff --git a/tox.ini b/tox.ini
index 2b107d0..740dae2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,6 +13,7 @@ deps =
     mock
 
 commands =
+    pip uninstall --yes django-oidc-provider
     pip install -e .
     coverage run --omit=.tox/*,oidc_provider/tests/* {envbindir}/django-admin.py test oidc_provider --settings=oidc_provider.tests.app.settings