diff --git a/setup.py b/setup.py
index 7430531f..bacd3a6e 100755
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@ setup(name='jedi',
               'colorama',
           ],
       },
-      package_data={'jedi': ['third_party']},
+      package_data={'jedi': ['*.pyi']},
       platforms=['any'],
       classifiers=[
           'Development Status :: 4 - Beta',
diff --git a/tox.ini b/tox.ini
index cce8e46f..d7eb9144 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,6 @@ setenv =
     env37: JEDI_TEST_ENVIRONMENT=37
 commands =
     pytest {posargs}
-whitelist_externals = pytest
 [testenv:cov]
 commands =
     coverage run --source jedi -m pytest