diff --git a/setup.cfg b/setup.cfg
index 04f5d0e0cd77b0595adadc83946ec443a0b11d81..70432281382e3a21aa323cb181ad8fb908a74edd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -136,6 +136,7 @@ whitelist_externals = rm
 commands_pre =
     rm -rf **/__pycache__
     rm -rf **/*.pyc
+    rm -rf .tox
 commands = 
 	pytest \
 	--cov={[metadata]name} \