diff --git a/requirements.txt b/requirements.txt
index 13a1165..47f7928 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ coverage==6.2
 dnspython==2.2.0
 email-validator==1.1.3
 flake8==3.8.4
-Flask==1.1.2
+Flask==2.3.3
 Flask-Bcrypt==0.7.1
 Flask-Login==0.5.0
 Flask-Migrate==2.7.0