diff --git a/requirements_dev.txt b/requirements_dev.txt
index b9e92c9..e8a5a85 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,6 +9,6 @@ Sphinx==1.7.1
 cryptography==2.1.4
 PyYAML==3.12
 pytest==3.4.2
-pytest-runner==4.0
+pytest-runner==4.2
 vcrpy==1.11.1
 twine==1.10.0