diff --git a/requirements_dev.txt b/requirements_dev.txt
index 88f74ba..62cbd7f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,4 +9,4 @@ Sphinx==1.7.7
 cryptography==2.3.1
 PyYAML==3.13
 pytest==3.9.2
-pytest-runner==4.2
\ No newline at end of file
+pytest-runner==5.2
\ No newline at end of file