diff --git a/requirements_dev.txt b/requirements_dev.txt
index 9d81dfb..1e4eb26 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,4 +7,4 @@ coverage==4.4.1
 Sphinx==1.6.3
 PyYAML==3.12
 pytest==3.2.1
-pytest-runner==2.11.1
+pytest-runner==2.12