diff --git a/requirements.txt b/requirements.txt
index b721b9b..6ada51e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 CherryPy==18.6.0
-Flask==1.1.2
+Flask==2.3.2
 geojson==2.5.0
 loguru==0.5.3
 more-itertools==8.7.0