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Home/ Questions/Q 6853267
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Editorial Team
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Editorial Team
Asked: May 27, 20262026-05-27T01:29:30+00:00 2026-05-27T01:29:30+00:00

In my gemfile I’ve got: group :development do gem ‘eventmachine’, 1.0.0.beta.4.1 end and in

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In my gemfile I’ve got:

group :development do
gem 'eventmachine', "1.0.0.beta.4.1"
end

and in my gemfile.lock

DEPENDENCIES
eventmachine (= 1.0.0.beta.4.1)

When I try to push it to heroku it says that it can not find and istall eventmachine. But I don’t need it on heroku server its for DEVELOPMENT environment. Why does it tries to install it? how should I handle this situation?

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  1. Editorial Team
    Editorial Team
    2026-05-27T01:29:31+00:00Added an answer on May 27, 2026 at 1:29 am

    I just ran into this with SQLite. The solution is to keep requiring the gem in your source when in dev mode, but simply remove it from the Gemfile. The app will run on your dev machine cause event-machine is installed, but heroku will only install gems you tell it to in the Gemfile.

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