diff --git a/setup.cfg b/setup.cfg
index 535bf67..2e08178 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,8 +15,8 @@ ignore_missing_imports = True
 [mypy-IPython.*]
 ignore_missing_imports = True
 
-[tox]
-envlist = py35,py36,py37,py36-lint
+[tox:tox]
+envlist = py36,py37,py36-lint
 
 [testenv]
 deps =
diff --git a/setup.py b/setup.py
index 3b76bab..3cf4150 100644
--- a/setup.py
+++ b/setup.py
@@ -26,5 +26,5 @@ setuptools.setup(
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
-    python_requires=">=3.5",
+    python_requires=">=3.6",
 )