diff --git a/Dockerfile b/Dockerfile
index 5d95c4c..ae9bda1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@
 #  if Azure Blob Storage support is needed.)
 
 # ── stage: base ───────────────────────────────────────────────────────────────
-FROM python:3.12-slim AS base
+FROM python:3.13-slim AS base
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \