---
title: "Upgrading from the Legacy CSS files"
framework: angular
version: "36.1.0"
---
# Upgrading from the Legacy CSS files
The Legacy CSS files are deprecated and will be removed from the Grid in a future major release. The new CSS files are 100% backwards compatible and upgrading should be as simple as changing an import path.
> **Warning**
>
> If you upgrade an app from v27 to v29+ without changing the import paths for CSS and Sass (.scss) files then the paths will be invalid and the themes won't work.
>
> Follow the instructions in this document to upgrade.
## Updating the CSS import paths
There are many ways to import CSS, but however you are doing this in your app you need to delete the `/dist` part from the path. For example if you're using the jsdelivr CDN:
```html
```
```html
```
```html
AG Grid
```
## Dark themes
In v27 there were separate CSS files for the light and dark versions of provided themes, e.g. `ag-theme-alpine.css` and `ag-theme-alpine-dark.css`.
In v28 both light and dark versions of themes are included in one file, so if you were previously including `ag-theme-alpine-dark.css`, change it to `ag-theme-alpine.css`. If you were previously including both files, remove the dark file.