diff --git a/.buildkite/Dockerfile b/.buildkite/Dockerfile
index 755c9286..abc6e656 100644
--- a/.buildkite/Dockerfile
+++ b/.buildkite/Dockerfile
@@ -1,6 +1,6 @@
 FROM ruby:4.0.5-slim-bookworm AS ruby
 FROM cypress/included:14.5.3 AS cypress
-FROM python:3.15.0b1-bookworm AS python
+FROM python:3.15.0b2-bookworm AS python
 # Latest released bktec image. This is used to split tests on `main`. On other
 # branches the test step builds bktec from source instead (see
 # .buildkite/steps/tests.sh). The `latest` tag only points at stable releases.