v1.8.1

langflow-ai/langflowv1.8.1Mar 13, 2026by vjgit96

AI Summary

Focuses on bug fixes for Windows compatibility, including ChromaDB file locks, image preview paths, and AstraDB icon sizing. Also fixes API key preservation during flow exports.

Key Highlights

Fixed Windows ChromaDB file locks when deleting Knowledge Bases
Fixed image preview for Windows paths in playground
Preserve API key configuration on flow export

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at v1.8.1 -->

## What's Changed
### 🐛 Bug Fixes
* fix(ui): Correct AstraDB icon size to use relative units by @Cristhianzl in https://github.com/langflow-ai/langflow/pull/12137
* fix(api): Handle Windows ChromaDB file locks when deleting Knowledge Bases by @Cristhianzl in https://github.com/langflow-ai/langflow/pull/12132
* fix: Fix image preview for Windows paths in playground by @Cristhianzl in https://github.com/langflow-ai/langflow/pull/12136
* fix: Properly propagate max tokens param to Agent by @erichare in https://github.com/langflow-ai/langflow/pull/12151
* fix: include uv/uvx in runtime Docker image by @Adam-Aghili in https://github.com/langflow-ai/langflow/pull/12127
* fix: preserve api key configuration on flow export by @HimavarshaVS in https://github.com/langflow-ai/langflow/pull/12129
* fix(mcp): Handle missing config file in MCP client availability detection by @Cristhianzl in https://github.com/langflow-ai/langflow/pull/12172
### Others
* chore: update fastapi dep by @jordanrfrazier in https://github.com/langflow-ai/langflow/pull/12141
* Fix: Tweaks override ENV VARIABLES by @dkaushik94 in https://github.com/langflow-ai/langflow/pull/12152


**Full Changelog**: https://github.com/langflow-ai/langflow/compare/v1.8.0...v1.8.1