diff --git a/requirements.txt b/requirements.txt
index aa775ce..f6ed525 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ Flask-RESTful==0.3.7
 Flask-Script==2.0.6
 Flask-Twisted==0.1.2
 requests==2.19.1
-PyJWT==1.7.1
+PyJWT==2.4.0
 networkx==2.4
 JPype1==0.7.0
 konlpy==0.5.1