diff --git a/requirements_dev.txt b/requirements_dev.txt
index 5614ae9..20ed6ee 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,7 +9,7 @@ Sphinx==1.8.1
 twine==1.12.1
 Click>=6.0
 path.py==11.5.0
-pytest==3.9.3
+pytest==4.0.2
 pytest-runner==4.2
 https://github.com/SekouD/potranslator/raw/dev/dependecy_wheels/importlib_resources-1.0.1-py2.py3-none-any.whl