diff --git a/docs/samples/kafka/transformer.Dockerfile b/docs/samples/kafka/transformer.Dockerfile
index 2f63320bf7..5f27a73ac0 100644
--- a/docs/samples/kafka/transformer.Dockerfile
+++ b/docs/samples/kafka/transformer.Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9-slim
+FROM python:3.13.0rc2-slim
 
 RUN apt-get update && apt-get install -y libglib2.0-0
 RUN pip install --no-cache-dir --upgrade pip && pip install --no-cache-dir kserve