diff --git a/opentelemetry/python-microservice/requirements.txt b/opentelemetry/python-microservice/requirements.txt
index e05443d..804c59c 100644
--- a/opentelemetry/python-microservice/requirements.txt
+++ b/opentelemetry/python-microservice/requirements.txt
@@ -2,7 +2,7 @@ backoff==1.10.0
 certifi==2020.6.20
 chardet==3.0.4
 click==7.1.2
-Flask==1.1.2
+Flask==3.1.2
 googleapis-common-protos==1.52.0
 grpcio==1.32.0
 idna==2.10