diff --git a/requirements.txt b/requirements.txt
index 01df4d3..56db37e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 line-bot-sdk==1.8.0
-flask==1.0.2
\ No newline at end of file
+flask==2.3.2
\ No newline at end of file