diff --git a/Dockerfile b/Dockerfile
index a0f0ba5..d5fce34 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM python:3.9-slim-buster
+FROM python:3.11-slim-buster
 
 ENV POETRY_VERSION=1.4 \
     POETRY_VIRTUALENVS_CREATE=false