diff --git a/requirements.txt b/requirements.txt
index b168f232..5f9f0ab0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ absl-py>=1.0.0
 jsonlines>=3.0.0
 pandas>=1.3.4
 numpy==1.26.4
-matplotlib>=3.5.1
+matplotlib==3.9.0
 seaborn>=0.13.0
 pyyaml>=6.0.1
 kaleido>=0.2.1