diff --git a/requirements_pinned.txt b/requirements_pinned.txt
index 4d52d112..f52ec016 100644
--- a/requirements_pinned.txt
+++ b/requirements_pinned.txt
@@ -2,7 +2,7 @@
 
 cycler==0.12.1
 numpy==1.26.4
-matplotlib==3.8.3
+matplotlib==3.9.0
 pyglotaran==0.7.2
 tabulate==0.9.0
 xarray==2024.2.0