diff --git a/requirements.txt b/requirements.txt
index acfd395..948a648 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ numpy==1.16.3
 pandas==0.23.4
 networkx==2.2
 pytest-timeout==1.2.1
-pytest==3.4.2
+pytest==9.0.3
 pytest-cov==2.5.1
 pytest-dependency>=0.2
 matplotlib==3.0.2