> ## 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 v1.51 release notes

> Released July 27, 2026

## New Features

**Filter conditions for Dynamic Search Rules**

Dynamic Search Rules now support a `filter` condition. A rule activates when the search filter matches at least one branch of the condition, giving you finer control over when rules apply.

**New `lastUpdatedAt` field for Dynamic Search Rules**

DSR listings now include a `lastUpdatedAt` field automatically populated with the timestamp of the last modification task. Listings are also sorted by `lastUpdatedAt` in descending order (most recently modified first).

## Improvements

**Faster search on large datasets**

Disk reads have been reduced to a single operation across the entire search pipeline, yielding up to 5.4x performance improvements on datasets with many distinct fields.

**Dumpless upgrade stabilized**

The `--experimental-dumpless-upgrade` flag is now stable and has been renamed `--upgrade-db`. Functionality is unchanged.

## Bug Fixes

* Restored legacy shorthand filterable attributes syntax support

## Breaking Changes

* Removed `--experimental-replication-parameters`, `--experimental-no-edition-2024-for-dumps`, and `--experimental-no-snapshot-compaction` flags

[Find more information on GitHub](https://github.com/meilisearch/meilisearch/releases/tag/v1.51.0)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.