diff --git a/tox.ini b/tox.ini
index 33094b5..1730b43 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,11 +16,9 @@ commands=
 deps=
     pytest
     pytest-cov
-    mock
 
 [testenv:flake8]
 deps=
-    six
     flake8
 commands=
     flake8 --exclude=".*" --ignore=W503,E402,E722 socketio tests