# What is the logstash gem?
**URL:** https://discuss.elastic.co/t/what-is-the-logstash-gem/132839
**Category:** Logstash
**Created:** [May 22, 2018, 2:33pm UTC](https://discuss.elastic.co/t/what-is-the-logstash-gem/132839 "2018-05-22T14:33:28Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@ebuildy](https://discuss.elastic.co/u/ebuildy)
#### Post date: [May 22, 2018, 2:33pm UTC](https://discuss.elastic.co/t/what-is-the-logstash-gem/132839/1 "2018-05-22T14:33:28Z")
From documentation at [https://www.elastic.co/guide/en/logstash/current/\_how\_to\_write\_a\_logstash\_output\_plugin.html](https://www.elastic.co/guide/en/logstash/current/_how_to_write_a_logstash_output_plugin.html)
```
source 'https://rubygems.org'
gemspec
gem "logstash", :github => "elastic/logstash", :branch => "6.2"
```
But when doing `bundle install`:
> Fetching git://github.com/elastic/logstash.git
> Fetching gem metadata from [https://rubygems.org/](https://rubygems.org/).........
> Could not find gem 'logstash' in git://github.com/elastic/logstash.git (at
> 6.2@60f9c7e).
> The source does not contain any versions of 'logstash'
Is it a typo?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 19, 2018, 2:33pm UTC](https://discuss.elastic.co/t/what-is-the-logstash-gem/132839/2 "2018-06-19T14:33:31Z")
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