diff --git a/requirements_dev.txt b/requirements_dev.txt
index c39ef5e..2e09454 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,5 +3,5 @@ httpretty==0.8.10
 mock
 moto
 pytest-cov
-pytest
+pytest==3.1.3
 testing.postgresql