Limit us to pytest < 2.8 to fix build

struys · struys · commit 5791d84236d8 · 2015-09-30T17:47:08.000-07:00
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -5,4 +5,4 @@ coverage
 flake8
 mock
 pylint<1.4
-pytest
+pytest<2.8
