# Dify 1.13.3 — Release & Upgrade Intelligence
- **Product:** Dify (https://dify.ai)
- **Version:** 1.13.3
- **Released:** Mar 27, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/dify/updates/1.13.3/

## Executive Summary (TL;DR)
Dify 1.13.3. Source highlight: 🚀 What's New in v1.13.3?

## New Features
- **Workflow Configuration**: Added variable-reference support for model parameters in LLM, Question Classifier, and Variable Extractor nodes by @scdeng in #33082.
- feat(web): add base ui toast
- feat: enhance model plugin workflow checks and model provider management UX
- feat: remove weaviate client __del__ method
- feat(web): add base ui scroll area primitive
- feat(confirm): input app name for app deletion confirmation

## Improvements
- perf: tidb_on_qdrant_vector delete_by_ids use batch delete
- test: improve code-cov for controller tests
- test(workflow): improve dataset item tests with edit and remove functionality
- test: enhance useChat hook tests with additional scenarios
- test(workflow-app): enhance unit tests for workflow components and hooks

## Bug Fixes
- **Streaming Reliability**: Fixed `StreamsBroadcastChannel` replay and concurrency issues to keep frontend/backend event delivery stable by @QuantumGhost in #34030 and #34061.
- **Workflow Editor Behavior**: Fixed pasted nodes retaining Loop/Iteration metadata and prevented `HumanInput` nodes from being pasted into invalid containers by @majiayu000 and @hjlarry in #29983 and #34077.
- **Runtime Execution**: Restored prompt message transformation logic and corrected `max_retries=0` handling for executor-driven HTTP Request execution by @QuantumGhost, @fatelei, and @kurokobo in #33666, #33619, and #33688.
- **Knowledge Retrieval**: Preserved citation metadata in web responses, fixed crashes when dataset icon metadata is missing, corrected hit-count query filtering, and restored indexed document chunk previews by @Theysua, @copilot-swe-agent, and @fatelei in #33778, #33907, #33757, and #33942.
- **Patch Stability**: This release prioritizes targeted fixes for workflow runtime behavior, real-time streaming, and knowledge base usability for teams upgrading from v1.13.2.
- fix: tighten toast typing and restore focus visibility