diff --git a/requirements_dev.txt b/requirements_dev.txt
index c83f08d3..aa72d6ae 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ coverage==4.5.1
 Sphinx==1.7.7
 cryptography==2.3.1
 PyYAML==3.12
-pytest==3.4.0
+pytest==4.1.0
 pytest-runner==3.0
 pytest_cov
 twine==1.9.1