diff --git a/tox.ini b/tox.ini
index 15ee5c1bf60c437d36818626daea4770cef31515..4592bd284267db972fe2f3a6f4520ff125331dd0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py36 py37 py38
+envlist=py36, py37, py38
 skip_missing_interpreters = true
 [testenv]
 setenv = PASSWORD_STORE_DIR = {env:HOME}/.password-store