diff --git a/requirements_dev.txt b/requirements_dev.txt
index d477a77..50bdca3 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,5 +9,5 @@ pytest-aiohttp==0.1.3
 Sphinx==1.5
 cryptography==1.6
 PyYAML==3.12
-pytest==3.0.5
+pytest==4.0.0
 docutils==0.12
\ No newline at end of file