> ## Documentation Index
> Fetch the complete documentation index at: https://www.meilisearch.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Meilisearch v1.21 release notes

> Released September 15, 2025

## New Features

### Vector Store Backend

A new vector store backend is now available for improved performance, especially when using binary quantization. To use it:

1. Enable the `vectorStoreSetting` experimental feature
2. Change the `vectorSetting` index setting to `"experimental"` for the indexes where you want to try the new vector store

### Persian Language Support

Added support for Persian language through an update to the character analysis library.

## Improvements

### Indexing Progress Trace

Fixed an issue where observing the progress trace during indexing could cause parts of the trace to be lost.

## Other

### Dumpless Upgrade Fix

If you encountered a decoding error when upgrading with a `rest` embedder, use the dumpless upgrade to v1.21 to fix this issue.

[Find more information on GitHub](https://github.com/meilisearch/meilisearch/releases/tag/v1.21.0)


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