diff --git a/requirements/tests-base.txt b/requirements/tests-base.txt
index c38f487..e2c19d2 100644
--- a/requirements/tests-base.txt
+++ b/requirements/tests-base.txt
@@ -1,7 +1,7 @@
 jinja2
 mako
 speaklater
-pytest
+pytest==3.2.1
 pytest-cov
 html5lib
 six