diff --git a/setup.cfg b/setup.cfg
index e3fc537..a5a7adc 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,7 +25,7 @@ upload-dir = docs/_build/html
 DJANGO_SETTINGS_MODULE = nsupdate.settings.dev
 pep8maxlinelength = 120
 norecursedirs = .git
-minversion = 2.3
+minversion = 3.6
 pep8ignore =
  *.py E124  # closing bracket does not match visual indentation (behaves strange!?)
  *.py E125  # continuation line does not distinguish itself from next logical line (difficult to avoid!)