diff --git a/backend/requirements.txt b/backend/requirements.txt
index 72160c5..840b182 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -27,7 +27,7 @@ httpx==0.26.0
 idna==3.7
 inflection==0.5.1
 kiwisolver==1.4.5
-matplotlib==3.9.0
+matplotlib==3.9.1
 numpy==1.26.4
 openai==1.35.10
 opencv-python==4.10.0.84