diff --git a/requirements_dev.txt b/requirements_dev.txt
index a4b86cd..a32589b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -10,4 +10,4 @@ Sphinx==1.8.0
 pygments==2.2.0
 cryptography==2.4.1
 PyYAML==4.2b2
-pytest==3.8.0
+pytest==4.1.0