diff --git a/requirements_dev.txt b/requirements_dev.txt
index d77dfed..ab6d518 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,5 +8,5 @@ coverage==4.2
 Sphinx==1.4.5
 cryptography==1.4
 PyYAML==3.11
-pytest==3.0.0
+pytest==3.4.2
 requests==2.10.0