diff --git a/requirements.txt b/requirements.txt
index ee3cc8c..dd51456 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 sympy==1.4
 pandas==0.24.2
-pytest==4.6.2
\ No newline at end of file
+pytest==9.0.3
\ No newline at end of file