diff --git a/tox.ini b/tox.ini
index 50ea146..e46e10c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,12 +13,12 @@ commands =
     flake8
 
 [testenv]
+basepython = python3
 deps =
     -r requirements.txt
     pytest
 
 commands =
-    export PYTHONPATH=$PYTHONPATH:$GITHUB_WORKSPACE
     pytest
 
 [testenv:build]