diff --git a/requirements.txt b/requirements.txt
index 587a9a3..bafcc1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # Flask
-Flask==1.1.1
+Flask==2.3.2
 
 # Excel
 openpyxl==2.6.2