diff --git a/backend/requirements.txt b/backend/requirements.txt
index 9c32243..c7c7e43 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -27,7 +27,7 @@ httpx==0.28.1
 idna==3.10
 inflection==0.5.1
 kiwisolver==1.4.7
-matplotlib==3.9.3
+matplotlib==3.9.4
 numpy==1.26.4
 openai==1.57.3
 opencv-python==4.10.0.84