diff --git a/requirements_dev.txt b/requirements_dev.txt
index 29474c8..becda87 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ coverage==4.3.4
 Sphinx==1.5.5
 cryptography==1.8.1
 PyYAML==3.12
-pytest==3.0.7
+pytest==3.4.2
 coveralls==1.1
 
 -r requirements.txt