diff --git a/requirements.txt b/requirements.txt
index 542f538..c457049 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ Flask==1.1.1
 Flask-WTF==0.14.2
 Jinja2==2.10.1
 MarkupSafe==1.1.1
-WTForms==2.0.2
+WTForms==2.3.1
 Werkzeug==0.16.0
 gevent==1.4.0
 greenlet==0.4.15