try fixing travis pytest

kumom · kumom · commit 3d52f1721149 · 2019-01-11T13:49:25.000+01:00
diff --git a/setup.py b/setup.py
@@ -20,7 +20,7 @@
     'dev': [
         'coverage',
         'flake8',
-        'pytest',
+        'pytest >= 3.6',
         'pytest-cov',
         'sphinx',
     ],
