diff --git a/tox.ini b/tox.ini
index f90c8ac..45937f8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -56,7 +56,6 @@ setenv =
     PYTHONWARNINGS=once::DeprecationWarning
 
 commands =
-    pip install -e .
     coverage run -m unittest {posargs}
 
 [coverage:run]