diff --git a/requirements.txt b/requirements.txt
index 5994a2f..5274ffe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ httpx==0.16.1
 idna==3.1
 iniconfig==1.1.1
 kiwisolver==1.3.1
-matplotlib==3.3.3
+matplotlib==3.3.4
 numpy==1.20.1
 packaging==20.8
 pandas==1.2.2