Reputation: 8034

Update just one gem with bundler

I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:

gem 'gem-name', :git => 'path/to/my/gem.git'

To update this gem, I execute bundle update but it also updates all the gem mentioned in Gemfile. So what is the command to update just one specific gem?

Upvotes: 302

Answers (9)

Tim

Reputation: 2891

With newer versions of bundler (>= 1.14, released in March 2017) it's:

bundle update --conservative gem-name

Conservative updates

The conservative flag allows bundle update --conservative GEM to update the version of GEM, but prevents Bundler from updating the versions of any of the gems that GEM depends on, similar to changing a gem’s version number in the Gemfile and then running bundle install.

See bundler 1.14 release notes or Bundler 1.14: So many fixes blog post for more info.

Upvotes: 73

Thomas Ramé

Reputation: 722

If nothing happens with bundle update gem-name it's maybe due to having as a global config do not touch lock files, you can disable this: bundle config set frozen false

Upvotes: 0

mseebacher

Reputation: 5150

Here you can find a good explanation on the difference between

Update both gem and dependencies:

bundle update gem-name

Update exclusively the gem:

bundle update --source gem-name

along with some nice examples of possible side-effects.

Update

As @Tim's answer says, as of Bundler 1.14 the officially-supported way to this is with bundle update --conservative gem-name.

Upvotes: 487

spyle

Reputation: 2008

If you want to update a single gem to a specific version:

change the version of the gem in the Gemfile
bundle update

> ruby -v
ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-darwin19]
> gem -v
3.0.3
> bundle -v
Bundler version 2.1.4

Upvotes: 0

shushugah

Reputation: 188

bundler update --source gem-name will update the revision hash in Gemfile.lock which you can compare with the last commit hash of that git branch (master by default).

GIT remote: [email protected]:organization/repo-name.git revision: c810f4a29547b60ca8106b7a6b9a9532c392c954

can be found at github.com/organization/repo-name/commits/c810f4a2 (I used shorthand 8 character commit hash for the url)

Upvotes: 0

Linus

Reputation: 4783

bundle update gem-name [--major|--patch|--minor]

This also works for dependencies.

Upvotes: 8

Christoph Lupprich

Reputation: 1190

I've used bundle update --source myself for a long time but there are scenarios where it doesn't work. Luckily, there's a gem called bundler-patch which has the goal of fixing this shortcoming.

I also wrote a short blog post about how to use bundler-patch and why bundle update --source doesn't work consistently. Also, be sure to check out a post by chrismo that explains in great detail what the --source option does.

Upvotes: 3