diff --git a/tests-requirements.txt b/tests-requirements.txt
index fa48b04..5174deb 100644
--- a/tests-requirements.txt
+++ b/tests-requirements.txt
@@ -5,3 +5,4 @@ coverage; python_version >= '3.0'
 coveralls; python_version >= '3.0'
 pylint; python_version > '3.0'
 mypy; python_version > '3.0'
+pytest; python_version > '3.0'