diff --git a/requirements_dev.txt b/requirements_dev.txt
index f79ffc5..27ebbfc 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -19,5 +19,5 @@ hotsoss==0.1.6
 webbpsf
 batman-package==2.4.6
 
-pytest==4.0.0
+pytest==6.0.1
 pytest-runner==4.2