diff --git a/dev-requirements.txt b/dev-requirements.txt
index 17e2ae8..c93065f 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,4 +3,4 @@ pylint>=2.2.2
 sphinx>=1.6.5
 sphinxcontrib-napoleon>=0.6.1
 sphinxcontrib-zopeext>=0.2.1
-py.test>=4.1.0
+pytest>=4.1.0