diff --git a/requirements.txt b/requirements.txt
index 8b0f206..c06561e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy>=1.12.0
 Werkzeug==0.16.0
-Flask==1.1.1
+Flask==2.3.2
 gevent==1.4.0
 pandas==0.24.2
 flask_testing==0.7.1