diff --git a/tox.ini b/tox.ini
index 07ff124..8fc7241 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,6 @@ envlist = py27, py33, py34, py35, py36, py37, py38, py39, pypy
 [testenv]
 deps =
     pytest
-    pytest-cov
     numpy
 commands=pytest tests {posargs}