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. 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 with Snyk for Ruby

The following manifest files are supported:
  • Gemfile
  • Gemfile.lock
Snyk requires both files to be present to correctly test, monitor, and fix Ruby Projects

Fixing vulnerabilities in your Ruby Projects

Snyk can fix vulnerabilities by updating vulnerable gems using bundle update, after modifying your Gemfile, adhering to the rules you have specified there as far as possible.
This means that in some scenarios, Snyk cannot upgrade all dependencies to non-vulnerable versions. In this case, consider updating the rules in your Gemfile.
In future releases, Snyk plans to provide suggestions to make this easier.

Private Gem sources

Using private Gem sources should work as normal when you are using the Snyk CLI.
When creating Fix PRs for Ruby Projects using private Gem sources, Snyk may need access to the service hosting the Gems to update the file correctly.

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, 2.7.7, 2.7.8


  • 3.0.0


  • 3.1.0, 3.1.1, 3.1.2, 3.1.3


  • 3.2.0, 3.2.1