diff --git a/requirements_dev.txt b/requirements_dev.txt
index 49f91e6..86b87a6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ flake8-mutable==1.2.0
 coverage==4.5.1
 Sphinx==1.7.1
 pip-tools==1.11.0
-pytest==3.4.1
+pytest==3.4.2
 pytest-runner==4.0
 pytest-cov==2.5.1
 mypy==0.570