diff --git a/cmd/python/functions_framework_compat/converter/requirements.txt b/cmd/python/functions_framework_compat/converter/requirements.txt
index ad97f7b..5be1644 100644
--- a/cmd/python/functions_framework_compat/converter/requirements.txt
+++ b/cmd/python/functions_framework_compat/converter/requirements.txt
@@ -5,7 +5,7 @@ cachetools==4.1.1
 certifi==2020.6.20
 chardet==3.0.4
 click==7.1.2
-Flask==1.1.2
+Flask==2.3.2
 google-api-core==1.21.0
 google-api-python-client==1.10.0
 google-auth==1.19.2