diff --git a/tox.ini b/tox.ini
index 602686c..64a2fd4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 
 [tox]
-envlist = flake,package{36,37,38,39},py{36,37,38,39}
+envlist = flake8,package-py{36,37,38,39},py{36,37,38,39}
 skip_missing_interpreters = true
 
 [testenv]
@@ -13,7 +13,7 @@ deps =
     flake8
 commands = flake8 {posargs}
 
-[testenv:package{36,37,38,39}]
+[testenv:package-py{36,37,38,39}]
 skip_install = True
 deps =
     check_manifest