You have already activated X, but your Gemfile requires Y

user_180663 0
Viewed 88145

When running rake I get this error:

You have already activated rake 0.9.2, but your Gemfile requires rake 0.8.7. Consider using bundle exec.

Using bundle exec rake instead of just rake seems to work, but is it the best way to fix this?

bundler rubygems ruby
10 Answers

Try bundle clean --force

It removes every system gem not in this bundle

user_64109300

Just used: bundle update

In my case, it solved my dependency version problem with Gemfile.lock file, it updated the packages with the latest version.

user_29877800

You might as well want to delete the Gemfile.lock file and run bundle install or just bundle, then try again.

user_121010660

This happens when there are different version in Gemfile and Gemfile.lock, in mycase am having strscan (3.0.3) in Gemfile.lock and ruby 3.0.4 in Gemfile, just delete the Gemfile.lock and run bundle install or bundle update

user_95051040

Another way to not type it every time is with a Makefile, for example

rake :
    bundle exec rake
user_31636180
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