v3.1.4 Release Notes - February 23, 2026

Improvements and Fixes

1. Fixed working with Docker Engine v29+. Replacement github.com/fsouza/go-dockerclient to native github.com/moby/moby/client by @pfi79 in 5353.
2. Fixed gossip: stop membership tracker ticker on channel shutdown by @remo-lab in 5364.
3. Fixed gossip: shutdown hang caused by blocking stop signal by @remo-lab in 5373.
4. Fixed gossip: prevent panic on state provider shutdown by @Ady0333 in 5378.
5. Fixed parsing CORE_PEER_DELIVERYCLIENT_ADDRESSOVERRIDES by @pfi79 in 5399.

Dependencies

Fabric v3.1.4 has been tested with the following dependencies:

• Go 1.26.0
• CouchDB v3.4.2

Fabric docker images on docker.io and ghcr.io utilize Ubuntu 24.04.

Changes and Removals

See the v3.0.0 release notes for changes and removals between Fabric v2.x and Fabric v3.x.

Deprecated features

Block dissemination via gossip is deprecated and may be removed

Block dissemination via gossip is deprecated and may be removed in a future release.
Fabric peers can be configured to receive blocks directly from an ordering service
node, and not gossip blocks, by using the following configuration:

peer.gossip.orgLeader: true
peer.gossip.useLeaderElection: false
peer.gossip.state.enabled: false
peer.deliveryclient.blockGossipEnabled: false