diff --git a/requirements.txt b/requirements.txt
index 0b858bb95f62c1a1225408b46f65927ea3498375..caee2ef50c35ae2ff078d25dbaa3e164a9bac9fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+markupsafe==2.0.1
 Flask==1.1.4
 Flask-Mail==0.9.1
 gevent==21.12.0