diff --git a/tox.ini b/tox.ini
index 263b7ec..9d0c782 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ setenv =
         FARGO_SETTINGS_FILE=tests/settings.py
         coverage: COVERAGE=--junitxml=junit-{envname}.xml --random --cov-report xml --cov-report html --cov=fargo/
 deps =
-        pytest>=3.3.0,<4.1
+        pytest
         pg: psycopg2
         pylint<1.8
         pylint-django<0.8.1