diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6a93d06..f7ddb53 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 -e .
 flake8==3.5.0
-pytest==3.3.2
+pytest==3.4.0
 pytest-cov==2.5.1
 coverage==4.4.2
 sphinx==1.6.6