> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getbifrost.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# v1.4.0-prerelease8

> v1.4.0-prerelease8 changelog - 2026-01-09

<Tabs>
  <Tab title="NPX">
    ```bash theme={null}
    npx -y @maximhq/bifrost --transport-version v1.4.0-prerelease8
    ```
  </Tab>

  <Tab title="Docker">
    ```bash theme={null}
    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>