ZcashFoundation/zebra v5.1.0

Zebra 5.1.0

on GitHub

Zebra 5.1.0 - 2026-06-10

This release fixes a genesis-to-tip sync stall that could cause new nodes to hang
during initial block download, bumps the minimum network protocol version to NU6.2,
extends the getpeerinfo RPC, and includes several performance and correctness fixes.

Breaking Changes

• The minimum network protocol version is now NU6.2 (170150). Peers running protocol
  versions below NU6.2 will be disconnected. Update to Zebra 5.0.0 or later to remain
  compatible (#10692).

Added

• Extended getpeerinfo RPC with subver, version, services, lastrecv,
  banscore, and connection_state fields (#10443)

Fixed

• Fixed genesis-to-tip sync stall that could cause new nodes to hang during initial
  block download (#10679)
• Fixed mempool index being unnecessarily rebuilt per transaction in getrawmempool
  (#10599)
• Fixed dequeue_children by-height index handling in the state service
  (#10604)

Contributors

Thank you to everyone who contributed to this release:
@andres-pcg, @conradoplg, @gustavovalverde, @judah-caruso, @oxarbitrage, @syszery and @upbqdn