diff --git a/examples/simple-app-docker/Dockerfile b/examples/simple-app-docker/Dockerfile
index c78018f..f48d743 100644
--- a/examples/simple-app-docker/Dockerfile
+++ b/examples/simple-app-docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3
+FROM python:3.13.0a2-slim
 
 WORKDIR /usr/src/app