diff --git a/requirements_dev.txt b/requirements_dev.txt
index c4737cd2..c41908c4 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ coverage==4.5.1
 Sphinx==1.6.6
 cryptography==2.1.4
 PyYAML==3.12
-pytest==3.4.0
+pytest==3.5.0
 pytest-runner==3.0
 pytest-cov==2.5.1
 twine==1.9.1