# Dify 1.13.1 — Release & Upgrade Intelligence
- **Product:** Dify (https://dify.ai)
- **Version:** 1.13.1
- **Released:** Mar 17, 2026
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/dify/updates/1.13.1/

## Executive Summary (TL;DR)
Dify 1.13.1. Source highlight: 🚀 Major Functional Changes

## Breaking Changes & Deprecations
- - **Breaking change:** HITL email content now uses markdown rendering before delivery.

## New Features
- Added **Hologres** as a supported backend option for both vector retrieval and full-text search.
- Added Service API endpoints for dataset document downloads:
- Added edge context menu support in workflow canvas, including direct edge deletion.
- Added configurable send-key behavior (`Enter` vs `Shift+Enter`) for embedded chat input.
- Added file payloads in message-end stream responses.
- Added a new `export-app-messages` CLI command to export application messages and related feedback to `JSONL.GZ` (local or cloud storage).

## Improvements
- **Breaking change:** HITL email content now uses markdown rendering before delivery.
- Draft variables are now user-scoped instead of app-scoped. Historical draft variables will not be available after upgrading.
- Preserved existing connections when changing node types in workflow editing.
- Removed GPT-4-specific hardcoded behavior from default model selection logic.
- Improved enterprise API error handling and license-enforcement behavior for invalid/expired license states.
- test: improve unit tests for controllers.service_api

## Bug Fixes
- Fixed `workflow_runs.started_at` being overwritten on resume.
- Fixed metadata batch-edit silent failures caused by split-transaction edge cases.
- Fixed metadata filter extraction issues in knowledge retrieval (`{{...}}` conditions).
- Fixed conversation variable reset behavior after HITL nodes.
- Fixed a page crash in knowledge-retrieval node configuration flow.
- Fixed chat assistant blocking response-mode behavior.