diff --git a/requirements.txt b/requirements.txt
index 976146e..f2d8f54 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # To ensure app dependencies are ported from your virtual environment/host machine into your container, run 'pip freeze > requirements.txt' in the terminal to overwrite this file
-flask==1.1.2
+flask==2.1.2
 gunicorn==20.0.4
 lxml==4.3.0
 waitress==2.0.0
\ No newline at end of file