diff --git a/backend/Dockerfile b/backend/Dockerfile
index 2ab1a26d4..e3f50eaab 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM python:3.9.20-bullseye AS sphinx-docs
+FROM python:3.12.7-bullseye AS sphinx-docs
 
 RUN apt update && apt install -y pandoc