diff --git a/requirements.txt b/requirements.txt
index bd4b3c1..68874fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ appdirs==1.4.0
 bip32utils==0.3.post3
 click==6.7
 ecdsa==0.13.3
-Flask==1.0
+Flask==2.3.2
 Flask-WTF==0.14.2
 itsdangerous==0.24
 Jinja2==2.11.3