diff --git a/requirements.txt b/requirements.txt
index 5b5e6ee..dd1342e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # analysis
-matplotlib==3.5.1
+matplotlib==3.9.1.post1
 numpy==1.22.3
 pandas==1.4.2
 PyYAML==6.0