diff --git a/setup.py b/setup.py
index a6e99168..0a5ebe68 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
     README = CHANGES = ''
 
 testing_extras = [
-    'pytest',
+    'pytest >= 3.1.0',  # >= 3.1.0 so we can use pytest.param
     'coverage',
     'pytest-cov',
     'pytest-xdist',