diff --git a/Dockerfile b/Dockerfile
index 547068d..8d609ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/python:3.11-slim
+FROM docker.io/python:3.9-slim
 
 RUN apt-get update \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \