Release Notes - v0.54.0

v0.54.0 (June 12, 2026)

Title: Make Mithril v2 the default, add offline metadata fetching, and strengthen experimental Leios and chainsync recovery

Date: June 12, 2026

Version: v0.54.0

Hi folks! Here’s what we shipped in v0.54.0.

Updated make Mithril v2 the default backend for snapshot sync: Dingo now uses the Mithril v2 backend by default, and operators who need legacy behavior must explicitly select v1.
Expanded fetch Mithril metadata without an active online session: Dingo now supports offline metadata fetching, which helps operators inspect sync metadata before starting a full retrieval flow.
Refined improve the experimental Leios pipeline for Dijkstra flows: Dingo now manages pipeline timing and stage progression more reliably in experimental Leios and Dijkstra flows, which improves consistency during experimental test runs.
Enhanced improve experimental Leios endorser block forging: Dingo now integrates experimental Leios endorser block forging into the Praos slot leader in Dijkstra flows, which improves experimental testing for those network modes.

Strengthened reduce sync stalls when a chainsync peer goes stale: Dingo now detects stale chainsync peers more effectively and advances recovery sooner, which reduces sync stalls after peer problems.
Improved recover more safely after reconnect and peer churn events: Dingo now reconnects more safely and recovers better after peer churn, which helps sync resume cleanly when peers drop or rotate.
Streamlined refresh Midnight service bindings more consistently: Dingo now vendors the Acropolis midnight_state.proto definition and adds gRPC code generation, which keeps Midnight service integrations aligned for teams that depend on it.
Clarified move API packages under the api/ namespace without changing runtime endpoints: Dingo keeps the same runtime endpoints, and it now places library import paths under api/, which simplifies package organization for library consumers.

Corrected reject experimental Leios endorser blocks with slot mismatches: Dingo now rejects experimental Leios endorser blocks when their slot values do not match expected timing, which prevents bad data from moving further through those flows.

Documented publish the finalized v0.53.0 release notes: The release history now includes the finalized v0.53.0 notes so the published record stays current.

Thank you for trying!