diff --git a/requirements_dev.txt b/requirements_dev.txt
index 1635ba8..a7c3e93 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -10,4 +10,4 @@ twine==1.9.1
 cryptography==2.1.4
 PyYAML==3.12
 pytest==3.4.0
-pytest-runner==4.0
+pytest-runner==5.0