v5.55.1 v2.1.0
bytedance/deer-flowSep 24, 2026 → Sep 24, 20260 days between releases
What's New
Upgrading from Strapi hotfix to DeerFlow major update introduces breaking changes and new features
Breaking Changes
- Trace ids are unconditional and controlled by header
- /mnt/skills is reserved for managed skills
- sandbox.replicas is enforced as a capacity limit
- Memory is pluggable with migration of DeerMem settings
- Docker binds loopback by default (set BIND_HOST to expose externally)
New Features
- Verifiable agent execution with tamper-evident receipts and bounded ledgers
- Pluggable memory backends including OpenViking, mem0, and Honcho
- Enterprise-grade authentication and authorization via OIDC/SSO and RBAC
- Out-of-tree extension system for custom middleware and lifecycle observers
- New sandbox providers including E2B, BoxLite, Tenki, and OpenSandbox
Improvements
- Dual-mode checkpoint storage reduces thread storage complexity from O(N²) to near-linear
Upgrade Notes
Update your infrastructure to send the X-Trace-Id header for correlation and migrate your DeerMem settings to the new pluggable memory backend. Ensure your infrastructure respects the reserved /mnt/skills path and configure BIND_HOST to expose services externally if needed.
The Two Releases
v5.55.1
Sep 24, 2026· 28 days ago
This is a hotfix release addressing a performance regression introduced in v5.55.0 that specifically impacted projects utilizing the documentation plugin. The update reverts a modification regarding repeated relation targets to restore system stability.
Full release notesv2.1.0 Release
Sep 24, 2026· 28 days ago
DeerFlow 2.1.0 is a major update focusing on trust, scale, and operability. It introduces verifiable agent execution, pluggable memory backends, enterprise-grade authentication, and a robust extension system alongside a richer workspace.
Full release notes