diff --git a/tox.ini b/tox.ini
index 551b374..137a12a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,5 +58,5 @@ deps =
     prospector
 skip_install = true
 commands =
-    prospector
+    prospector -X
     black -t py38 --check --diff .