diff --git a/requirements_dev.txt b/requirements_dev.txt
index 23f65b9..90425af 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -22,7 +22,7 @@ pycodestyle==2.0.0
 pycparser==2.14
 pyflakes==1.2.3
 Pygments==2.1.3
-pytest==2.9.2
+pytest==3.5.1
 python-dateutil==2.5.3
 pytz==2016.6.1
 PyYAML==3.11