diff --git a/azure_webapp/requirements.txt b/azure_webapp/requirements.txt
index 2f61d17..bd37a87 100644
--- a/azure_webapp/requirements.txt
+++ b/azure_webapp/requirements.txt
@@ -1,7 +1,7 @@
 bokeh==2.0.2
 click==7.1.2
 decorator==4.4.2
-Flask==1.1.2
+Flask==2.3.2
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1