diff --git a/requirements.txt b/requirements.txt
index 9e3a82e..8b0fb8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Flask==1.1.1
 Flask-RESTful==0.3.8
 itsdangerous==1.1.0
 Jinja2==2.11.0
-MarkupSafe==1.1.1
+MarkupSafe==3.0.2
 python-dotenv==0.12.0
 pytz==2019.3
 six==1.14.0