---
title: "v1.4.0-prerelease8"
description: "v1.4.0-prerelease8 changelog - 2026-01-09"
---
<Tabs>
  <Tab title="NPX">
    ```bash
    npx -y @maximhq/bifrost --transport-version v1.4.0-prerelease8
    ```
  </Tab>
  <Tab title="Docker">
    ```bash
    docker pull maximhq/bifrost:v1.4.0-prerelease8
    docker run -p 8080:8080 maximhq/bifrost:v1.4.0-prerelease8
    ```
  </Tab>
</Tabs>

<Update label="Bifrost(HTTP)" description="1.4.0-prerelease8">
- fix: vertex list models enhanced to support values from deployments
- fix: header keys are now converted to lowercase for better consistency in plugin usage
- fix: gemini system message conversion and added support for using instructions parameter as a fallback when no system message

</Update>
<Update label="Core" description="1.3.7">
- fix: vertex list models enhanced to support values from deployments
- fix: gemini system message conversion and added support for using instructions parameter as a fallback when no system message

</Update>
<Update label="Framework" description="1.2.7">
- chore: updated core version to 1.3.7

</Update>
<Update label="governance" description="1.4.8">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="jsonparser" description="1.4.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="logging" description="1.4.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="maxim" description="1.5.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="mocker" description="1.4.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="otel" description="1.1.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="semantic_cache" description="1.4.7">
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
<Update label="telemetry" description="1.4.8">
- feat: adds support for external Prometheus registry
- chore: updated core version to 1.3.7 and framework version to 1.2.7

</Update>
