diff --git a/requirements_dev.txt b/requirements_dev.txt
index 088eb4f..f01c8c3 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,5 +8,5 @@ coverage==4.5.1
 PyYAML==3.12
 pytest==3.5.0
 pytest-cov==2.5.1
-pytest-runner==4.2
+pytest-runner==4.4
 sphinx_rtd_theme==0.2.5b2