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2 changes: 2 additions & 0 deletions docs/install-hydra.md
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## Prerequisites

* A unix based operating system (Mac or Linux), you may experience issues on Windows.
* node 12.X is recomended, there are known compatibility issues with 14.X
* Both Hydra-CLI and the generated project files have dependencies that require Node v10.16 or higher
* `npm` and \(optional, but recommended\) [`npx`](https://www.npmjs.com/package/npx)
* Hydra stores the substrate data in an external PostgresSQL 12 instance. The scaffolding tool provides a convenient shortcut for running the database instance from a Docker image. In this case the standard docker environment \(`docker` and `docker-compose`\) should be available.
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