CI: Upgrade `tox`

[ppu.git] / tox.ini

diff --git a/tox.ini b/tox.ini
index 3f722f78e871f767e9fead5887b65d80dde5cb86..eda0f9f8374030101e2a5aa7b5394e329e9e6e9c 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-minversion = 1.8
+minversion = 3.15
 envlist = py27,py3{4,5,6,7,8,9},pypy,py{27,39}-flake8
 
 # Base test environment settings