diff --git a/requirements/main.txt b/requirements/main.txt
index 824b2ccb..8c2280ce 100644
--- a/requirements/main.txt
+++ b/requirements/main.txt
@@ -3,7 +3,7 @@ click==8.1.3
 escpos==1.9
 # FIXME: newer verion available but breaks it flask_restx-0.5.1
 Werkzeug==2.1.2
-Flask==2.1.2
+Flask==3.1.3
 ###############################################################
 Flask_Colorpicker==0.9
 Flask_Datepicker==0.8