v3.1.3 Release Notes - October 18, 2025

Improvements and Fixes

The commit 77db242 removed sampleconfig/msp from the orderer docker image,
and as a result orderers deployed with docker built from the image failed to run due to a mounting error.
Fixed by explicitly adding the config files in commit bbd9ca7.

Dependencies

Fabric v3.1.3 has been tested with the following dependencies:

• Go 1.25.2
• 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