diff --git a/requirements.txt b/requirements.txt
index 95cfb3c..052a6ef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # https://github.com/Damnever/pigar
 
 # device_emulator_http_server.py: 7,8
-flask == 2.0.1
+flask == 2.3.2
 
 # device_emulator_mqtt.py: 9
 # device_south_iot_mqtt.py: 12