diff --git a/tox.ini b/tox.ini
index 89fccc2e..1d314eb8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,15 +6,15 @@ deps=
     pytest>=2.7.2
     django>=1.8.0,<1.9
     pytest-django
-    graphql-core==0.1a0
+    graphql-core==0.1a3
     graphql-relay==0.2.0
-    flake8
     six
     blinker
     singledispatch
+setenv =
+     PYTHONPATH = .:{envdir}
 commands=
     py.test
-    flake8
 
 [pytest]
 DJANGO_SETTINGS_MODULE = tests.django_settings