diff --git a/requirements_test.txt b/requirements_test.txt
index a99b558b..a8729b16 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,3 +1,3 @@
 coverage>=4.0,<4.4  # TODO: https://github.com/benoitc/gunicorn/issues/1548
-pytest==3.0.5
-pytest-cov==2.4.0
+pytest==3.2.5  # TODO: upgrade to latest version requires drop support to Python 2.6
+pytest-cov==2.5.1