Fix tox version

monouno · monouno · commit e90b4ad31d54 · 2019-05-06T09:28:16.000+08:00
diff --git a/setup.py b/setup.py
@@ -55,8 +55,8 @@ def rel(*xs):
     "twine==1.12.1",
 
     # Testing
-    "tox==3.6.1",
-    "tox-venv"
+    "tox==3.9.0",
+    "tox-venv==0.4.0"
 ]
 
 
