---
title: "Upgrading to AG Grid 34.3"
framework: vue
version: "36.1.0"
---

# Upgrading to AG Grid 34.3

MCP Server, AI Toolkit, Scaled Column Auto-Sizing, Date and Time Pivoting, React 19.2 Support

## What's New

AG Grid 34.3 adds important new features - [MCP Server](https://www.ag-grid.com/vue-data-grid/mcp-server/), [AI Toolkit](https://www.ag-grid.com/vue-data-grid/ai-toolkit/), [Scaled Column Auto-Sizing](https://www.ag-grid.com/vue-data-grid/column-sizing/#auto-size-columns-to-fit-cell-contents), [Date and Time Pivoting](https://www.ag-grid.com/vue-data-grid/pivoting-column-groups/#pivoting-by-dates-and-times), [React 19.2 Support](https://www.ag-grid.com/react-data-grid/compatibility/#ag-grid--react-compatibility-chart) as described in the [release post](https://blog.ag-grid.com/whats-new-in-ag-grid-34-3/). These improvements involve no breaking changes as listed below.

## Documentation

[See AG Grid 34.3 Documentation](https://www.ag-grid.com/archive/34.3.1/documentation)

## Codemods

Follow these steps to upgrade your project's AG Grid version to 34.3:

1. Locate your project's `package.json` and note the version of AG Grid that you are currently using.
2. Update any AG Grid dependencies listed in the `package.json` to version 34.3.
3. Open a terminal and navigate to your project's root folder.
4. Run the `migrate` command of version 34.3 of the AG Grid codemod runner, where `$FROM_VERSION` refers to your project's existing AG Grid version:

   ```
   npx @ag-grid-devtools/cli@latest migrate --from=$FROM_VERSION --to=34.3
   ```

   This will update your project's source files to prepare for the new release.

   By default the Codemod runner will locate all source files within the current directory. For projects with more specific requirements, pass a list of input files to the `migrate` command, or specify the `--help` argument to see more fine-grained usage instructions.

> **Note**
>
> The Codemod runner will check the state of your project to ensure that you don't lose any work. If you would rather see a diff of the changes instead of applying them, pass the `--dry-run` argument.

The codemod only transforms source files that make use of deprecated features, so if you aren't currently making use of any of those APIs your source code will be unaffected by the codemod.

See the [Codemods](https://www.ag-grid.com/vue-data-grid/codemods/) documentation for more details.

## Breaking Changes

There are no breaking changes in AG Grid version 34.3.

## Behaviour Changes

There are no behaviour changes in AG Grid version 34.3.

## Removal of Deprecated APIs

There are no deprecated API removals in AG Grid version 34.3.

## Deprecations

### ColDef

- `rowGroupingHierarchy` is deprecated, use `groupHierarchy` instead.

## Changes List

[See the full changelog for v34.3.0](https://www.ag-grid.com/changelog/?fixVersion=34.3.0)