diff --git a/dev_requirements.txt b/dev_requirements.txt
index 551d254..f19f199 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,4 +1,4 @@
-pytest==3.2.5
+pytest==9.0.3
 codecov==2.0.15
 unittest2==1.1.0
 pytest-cov==2.5.1