diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8b4dc2c..b8c90c4 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 zest.releaser==6.9
 Sphinx==1.5.5
 coverage==4.3.4
-pytest==3.0.7
+pytest==9.0.3