diff --git a/requirements.txt b/requirements.txt
index 9cb1386..d8d96b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 Flask==1.0.2
 Jinja2==2.10
-MarkupSafe==1.1.1
+MarkupSafe==3.0.2
 Werkzeug==0.15.5
\ No newline at end of file