diff --git a/requirements.txt b/requirements.txt
index f266615..0965e1f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ execnet==1.6.0
 future==0.17.1
 idna==2.8
 kiwisolver==1.1.0
-matplotlib==3.1.0
+matplotlib==3.4.0
 more-itertools==7.0.0
 numpy==1.16.4
 pandas==0.24.2