diff --git a/requirements_dev.txt b/requirements_dev.txt
index e8a5a85..cdbeef7 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ coverage==4.5.1
 Sphinx==1.7.1
 cryptography==2.1.4
 PyYAML==3.12
-pytest==3.4.2
+pytest==3.5.0
 pytest-runner==4.2
 vcrpy==1.11.1
 twine==1.10.0