diff --git a/dependencies.Dockerfile b/dependencies.Dockerfile
index 1530138bf..7cc8ecbda 100644
--- a/dependencies.Dockerfile
+++ b/dependencies.Dockerfile
@@ -1,4 +1,4 @@
 # This is a renovate-friendly source of Docker images.
-FROM python:3.13.3-slim-bullseye@sha256:f0acec66ba3578f142b7efc6a3e5ce62a5f51639ea430df576f9249c7baf6ef2 AS python
+FROM python:3.13.4-slim-bullseye@sha256:de0e7494b82e073b7586bfb2b081428ca2c8d1db2f6a6c94bc2e4c9bd4e71276 AS python
 FROM otel/weaver:v0.15.2@sha256:b13acea09f721774daba36344861f689ac4bb8d6ecd94c4600b4d590c8fb34b9 AS weaver
 FROM avtodev/markdown-lint:v1@sha256:6aeedc2f49138ce7a1cd0adffc1b1c0321b841dc2102408967d9301c031949ee AS markdown