diff --git a/test-requirements.txt b/test-requirements.txt
index e7eb6c2..99ccc49 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 -r requirements.txt
 flake8
 coverage
-pytest
+pytest==3.1.3
 pytest-cov
 bumpr