diff --git a/requirements.txt b/requirements.txt
index 0e9cb0a458454c736170496fc039aa2ace21c813..d58bc2f0e85edc9c5eda542e73339dd2bc170974 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ backports.tempfile==1.0
 futures==3.2.0
 fuzzywuzzy==0.17.0
 lxml==4.3.3
-matplotlib==2.2.3
+matplotlib==2.2.4
 numpy==1.16.2
 Pillow>=3.4.1
 python-crfsuite==0.9.6