diff --git a/requirements.txt b/requirements.txt
index d165e89..54bdf25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cytoolz==0.10.1
 eth-hash==0.2.0
 eth-typing==2.2.1
 eth-utils==1.8.1
-Flask==1.1.1
+Flask==2.3.2
 Flask-DebugToolbar==0.10.1
 flask-mongoengine==0.9.5
 Flask-WTF==0.14.2