15 Apr 2025

> [!CAUTION]
> BREAKING CHANGE WITH KUBERNETES v1.24
> 
> If you installed Calico Open Source on Kubernetes v1.24, **do not update your installation** to Calico Open Source v3.28.4.
This patch release contains breaking changes and is not compatible with Kubernetes v1.24.
> 
> For full compatibility, upgrade your base Kubernetes installation to Kubernetes v1.28 or later.

#### Bug fixes

 - eBPF - Fixed a bug where BPF programs were being re-attached to network interfaces unnecessarily, even when the host IP address had not changed. [calico #10165](https://github.com/projectcalico/calico/pull/10165) (@sridhartigera)

#### Other changes

 - Removed Kubernets PodSecurityPolicy (PSP) Support. PodSecurityPolicies were removed from Kubernetes v1.25+, and Calico no longer supports kubernetes versions older than v1.25. PSPs are no longer rendered on supported clusters. [calico #10196](https://github.com/projectcalico/calico/pull/10196) (@lucastigera)
