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---
layout: docs
page_title: 0.4.x
description: >-
Consul API Gateway release notes for version 0.4.x
---
# Consul API Gateway 0.4.0
## Release Highlights
- **Support for Kubernetes Gateway API Version 0.5.0 and v1beta1 APIs:**
The `v0.5.0` release of the Kubernetes Gateway API is significant because it
marks the growth in maturity to a beta API version (v1beta1) release for some
of the key APIs:
- GatewayClass
- Gateway
- HTTPRoute
The other APIs (e.g. TCPRoute) are still at the `v1alpha2` stage.
Reaching `v1beta1` status has several benefits for users, including greater
stability and backward compatibility requirements. Existing fields and allowed
options can not be removed or renamed except in a new, major version of the
API. Once an API reaches `v1beta1` status, future versions must comply with
several backward compatibility requirements.
- **URL Path Prefix Rewrite**
This release introduces support for rewriting a URL's path prefix when routing
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HTTP traffic. To use this functionality, add a `URLRewrite` filter to an
`HTTPRoute` configuration. This enables the gateway to rewrite the URL path in a client's HTTP request before sending the request to a service. For example, you could configure the gateway to change the path from `//store/checkout` to `//cart/checkout`. Refer to the [usage documentation](/docs/api-gateway/usage) for additional information.
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## What Has Changed
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- **Reference Policy Renamed to Reference Grant** In v0.5.0 of the Kubernetes
Gateway API, `ReferencePolicy` has been renamed to `ReferenceGrant`. This
release supports both but `ReferencePolicy` is deprecated and will be removed
in a future version of the standard.
After upgrading to this version of Consul API Gateway, you should rename all
existing `ReferencePolicy`y to `ReferenceGrant`s. Please see the upgrading
instructions for additional details.
## Supported Software
- Consul 1.11.2+
- HashiCorp Consul Helm chart 0.47.0+
- Kubernetes 1.21+
- Kubernetes 1.24 is not supported at this time.
- Kubectl 1.21+
- Envoy proxy support is determined by the Consul version deployed. Refer to
[Envoy Integration](/docs/connect/proxies/envoy) for details.
## Kubernetes Gateway API Specification
Supported version of the [Gateway API](https://gateway-api.sigs.k8s.io/) spec: v0.5.0
## Upgrading
For detailed information on upgrading, please refer to the [Upgrades page](/docs/api-gateway/upgrades)
## Changelogs
The changelogs for this major release version and any maintenance versions are listed below.
~> **Note:** The following link will take you to the changelogs on the GitHub website.
- [0.4.0](https://github.com/hashicorp/consul-api-gateway/releases/tag/v0.4.0)
