Snyk for Ruby

Snyk supports testing, monitoring and fixing Ruby projects in the CLI and Git integrations that have their dependencies managed by Bundler, and comparing the specific dependency versions against the Ruby vulnerability database.
Snyk tests all Bundler groups, and currently it is not possible to exclude certain groups (such as test or development groups).
If your Gemfile needs access to private Gem sources, see Private Gem sources.
Platform-specific packages are currently not supported. If these are present in your Gemfile.lock then this can cause an invalid Fix PR to be created. If possible, use the non-platform specific variant of a package.

Manifest files supported

The following manifest files are supported:
  • Gemfile
  • Gemfile.lock
Note Snyk requires both files to be present in order to correctly test, monitor & fix Ruby projects

Fixing vulnerabilities in your Ruby projects

Note Snyk is doing some maintenance work for Ruby Fix PRs at this time. If you are an existing user with an existing account, you should not be affected. If you are new to Snyk, you will find this is temporarily disabled. It should be re-opened by end of December 2022.
Snyk can fix vulnerabilities by updating vulnerable gems, using bundle update, after modifying your Gemfile (sticking to the rules you have specified there as far as possible).
This means that in some scenarios Snyk will not be able to upgrade all dependencies to non-vulnerable versions. In this case, you should consider updating the rules in your Gemfile.
In future releases, Snyk plans to provide suggestions to make this easier.

Private Gem sources

If you use private Gem sources this should work as normal when testing via the Snyk CLI.

Supported Ruby version


  • '2.3.1', '2.3.6'


  • '2.4.0', '2.4.1', '2.4.2', '2.4.5', '2.4.6', '2.4.9'


  • '2.5.0', '2.5.1', '2.5.3'


  • '2.6.1', '2.6.3', '2.6.5', '2.6.6'


  • '2.7.2', '2.7.3', '2.7.4', '2.7.5', '2.7.6'