diff --git a/demo/Dockerfile.response b/demo/Dockerfile.response
index 2fff54a1..6a978cc7 100644
--- a/demo/Dockerfile.response
+++ b/demo/Dockerfile.response
@@ -1,4 +1,4 @@
-FROM python:3.7-slim
+FROM python:3.13.0a3-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     netcat \