diff --git a/setup.py b/setup.py
index c037905..667214d 100755
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 pytest_runner = ['pytest-runner'] if needs_pytest else []
 
 tests_requirements = [
-    'pytest',
+    'pytest==3.6.4',
     'pytest-cov',
     'pytest-factoryboy',
     'pytest-flake8',