diff --git a/installer/server-linux/Dockerfile.backend b/installer/server-linux/Dockerfile.backend
index 4c8b893..e8fd36a 100644
--- a/installer/server-linux/Dockerfile.backend
+++ b/installer/server-linux/Dockerfile.backend
@@ -10,7 +10,7 @@ COPY dashboard/ ./dashboard/
 RUN cd dashboard && npm run build
 
 # ---- Stage 2: Python runtime ----
-FROM python:3.12.13-slim-bookworm@sha256:8a7e7cc04fd3e2bd787f7f24e22d5d119aa590d429b50c95dfe12b3abe52f48b
+FROM python:3.15.0-slim-bookworm@sha256:0e019bbdfb5d9874cb2389f1c2884b64aa2ac97c99960b5bc521cef978c0617d
 ARG TESSERACT_LANGS="eng"
 RUN set -eux; \
     packages="tesseract-ocr"; \