Fixes an issue where the newer versions of Pytest can't detect deprecation warnings

This was fixed in https://github.com/pytest-dev/pytest/pull/1081 but is not released yet.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 30209e4..452e4e5 100755
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@ if sys.argv[-1] == 'publish':
     sys.exit()
 
 tests_require = [
-    'pytest',
+    'pytest==2.7.3',
     'pytest-cov',
     'pytest-runner',
 ]