diff --git a/Dockerfile b/Dockerfile
index 079bd9b..05782d1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # Base image pinned by its multi-arch index digest, so a re-pushed tag cannot
 # change what is built. Refresh the digest and the tag together.
-FROM python:3.11.15-slim-bookworm@sha256:d29f48a31a8b408ed19272ca1e7b10ebae13b240a27e862d3d4217c528e2e0c3 AS builder
+FROM python:3.14.7-slim-bookworm@sha256:82bc3c539b8813ada9d68c63b40158fa002f7f33de9bf3312a3dfdc0620dff56 AS builder
 
 ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_NO_CACHE_DIR=1
@@ -14,7 +14,7 @@ COPY pyproject.toml README.md LICENSE NOTICE ./
 COPY src ./src
 RUN python -m pip wheel --no-deps --no-build-isolation --wheel-dir /wheels .
 
-FROM python:3.11.15-slim-bookworm@sha256:d29f48a31a8b408ed19272ca1e7b10ebae13b240a27e862d3d4217c528e2e0c3 AS runtime
+FROM python:3.14.7-slim-bookworm@sha256:82bc3c539b8813ada9d68c63b40158fa002f7f33de9bf3312a3dfdc0620dff56 AS runtime
 
 ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_NO_CACHE_DIR=1 \