# The CLI default package manager is not yarn anymore

> Source: https://docs.strapi.io/cms/migration/v4-to-v5/breaking-changes/yarn-not-default

In Strapi 5, the CLI detects your package manager and uses it to install dependencies instead of defaulting to `yarn`. Use the `--use-yarn` flag if you need to enforce yarn specifically.

In Strapi v5, the command used to run dependencies installation is the one used to actually install them.

This page is part of the [breaking changes database](/cms/migration/v4-to-v5/breaking-changes) and provides information about the breaking change and additional instructions to migrate from Strapi v4 to Strapi 5.

- Is this breaking change affecting plugins? No
- Is this breaking change automatically handled by a codemod? No

## Breaking change description

**In Strapi v4**

All the following commands try to use `yarn` to install the application dependencies:

- `npx create-strapi-app`
- `npm create strapi-app`
- `yarn create strapi-app`
- `yarn dlx …`

**In Strapi 5**

Strapi detects what package manager you are using to run the CLI, and uses this package manager to install dependencies.

## Migration

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### Notes

* Since Strapi detects the package manager used to run the command and uses it to install dependencies, this means the following example use cases will happen:

  - `npx create-strapi-app`  installs the dependencies with `npm`
  - `npm create …` installs the dependencies with `npm`
  - `yarn create …` installs the dependencies with `yarn`
  - `yarn dlx …` installs the dependencies with `yarn`
  - `pnpm create …` installs the dependencies with `pnpm`
  - `pnpm dlx …` installs the dependencies with `pnpm`

### Manual procedure

Users with existing projects are not impacted. Only users doing specific automation and scripts or plugin developers that are used to running a `create-strapi-app` command and expect yarn to be used by default will be impacted.

If, for instance, you want to use npx but still enforce using yarn to install dependencies, add a `--use-yarn` flag. Additional information about the possible flags is available in the [CLI installation reference](/cms/installation/cli#cli-installation-options).