diff --git a/ci/requirements.txt b/ci/requirements.txt
index 6929a19638b..9d8f9f8c471 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -1,4 +1,4 @@
-matplotlib==3.8.3
+matplotlib==3.8.4
 numpy==1.26.4
 pandas==2.2.1
 pooch==1.8.1