diff --git a/examples/circuit_breaker/user/Dockerfile b/examples/circuit_breaker/user/Dockerfile
index 91b1a6f7..2beec53e 100644
--- a/examples/circuit_breaker/user/Dockerfile
+++ b/examples/circuit_breaker/user/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3-slim
+FROM python:3.12.0b1-slim
 LABEL maintainer="guillaume@gauvr.it"
 
 WORKDIR /srv/user