diff --git a/requirements_dev.txt b/requirements_dev.txt
index f1e10d5..b975094 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ lazy-object-proxy==1.3.1
 mccabe==0.6.1
 py==1.10.0
 pylint==1.7.2
-pytest==3.1.3
+pytest==9.0.3
 pytest-cov==2.5.1
 six==1.10.0
 wrapt==1.10.10