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General is the default Julia package registry. Package registries are used by Julia's package manager Pkg.jl and includes information about packages such as versions, dependencies and compatibility constraints.

The General registry is open for everyone to use and provides access to a large ecosystem of packages.

If you are registering a new package, please make sure that you have read the package naming guidelines.

Follow along new package registrations with the #new-packages-feed channels in the community Slack or Zulip!

See our Contributing Guidelines for ways to get involved!

Registering a package in General

New packages and new versions of packages are added the General registry by pull requests against this GitHub repository. It is highly recommended that you use Registrator.jl to automate this process. Registrator can either be used as a GitHub App or through a web interface, as decribed in the Registrator README.

When Registrator is triggered a pull request is opened against this repository. Pull requests that meet certain guidelines is merged automatically, see Automatic merging of pull requests. Other pull requests need to be manually reviewed and merged by a human.

It is highly recommended to also use TagBot, which automatically tags a release in your repository after the new release of your package is merged into the registry.

Registered packages must have an Open Source Initiative approved license, clearly marked via a, LICENSE, COPYING or similarly named file in the package repository. Packages that wrap proprietary libraries are acceptable if the licenses of those libraries permit open source distribution of the Julia wrapper code.

Automatic merging of pull requests

Pull requests that meet certain criteria are automatically merged periodically. Only pull requests that are opened by Registrator are candidates for automatic merging.

The full list of AutoMerge guidelines is available in the RegistryCI documentation.

Please report issues with automatic merging to the RegistryCI repo.

Currently the waiting period is as follows:

  • New Julia packages: 3 days (this allows time for community feedback)
  • New versions of existing packages: 15 minutes
  • JLL package (binary dependencies): 15 minutes, for either a new package or a new version


Do I need to register a package to install it?

No, you can simply do using Pkg; Pkg.add(url="") or ] add in the Pkg REPL mode to e.g. install the package Example.jl, even if it was not registered. When a package is installed this way, the URL is saved in the Manifest.toml, so that file is needed to resolve Pkg environments that have unregistered packages installed.

Registering allows the package to be added by Pkg.add("Example") or ] add Example in the Pkg REPL mode. This is true if the package is installed in any registry you have installed, not just General; you can even create your own registry!

Should I register my package?

If your package might be useful to others, or provide functionality other packages in General might want to rely on, go for it! We only ask that you consider the following best practices.

  • It is easier for others to use your package if it has documentation that explains what the package is for and how to use it. This could be in the form of a README or hosted documentation such as that generated by Documenter.jl.
  • And in order to provide reliable functionality for your users, it is also important to setup tests (see the Pkg.jl docs and the Test stdlib docs), which can be automatically run by free continuous integration services such as GitHub Actions.

Packages like PkgTemplates.jl or PkgSkeleton.jl provide easy ways to setup documentation, tests, and continuous integration.

My pull request was not approved for automatic merging, what do I do?

It is recommended that you fix the release to conform to the guidelines and then retrigger Registrator on the branch/commit that includes the fix.

If you for some reason can't (or won't) adhere to the guidelines you will have to wait for a human to review/merge the pull request. You can contact a human in the #pkg-registration channel in the official Julia Slack to expedite this process.

My package fails to load because it needs proprietary software/additional setup to work, what can I do?

Before merging a pull request, AutoMerge will check that your package can be installed and loaded. It is OK for your package to not be fully functional, but making it at least load successfully would streamline registration, as it does not require manual intervention from the registry maintainers. This would also let other packages depend on it, and use its functionalities only when the proprietary software is available in the system, as done for example by the CUDA.jl package. If you are not able or willing to make your package always loadable without the proprietary dependency (which is the preferred solution), you can check if the environment variable JULIA_REGISTRYCI_AUTOMERGE is equal to true and make your package loadable during AutoMerge at least, so that it can be registered without manual intervention. Examples of packages with proprietary software that use the environment variable check include Gurobi.jl and CPLEX.jl.

My pull request has a merge conflict, what do I do?

Retrigger Registrator.

How do I retrigger Registrator in order to update my pull request?

Do what you did when you triggered Registrator the first time.

Are there any requirements for package names in the General registry?

There are no hard requirements, but it is highly recommended to follow the package naming guidelines.

What to do when asked to reconsider/update the package name?

If someone comments on the name of your package when you first release it it is often because it does not follow the naming guidelines. If you think that your package should not follow those conventions for some reason or another, just explain why. Otherwise, it is often a good idea to just rename the package -- it is more disruptive to do so after it is already registered, and sticking to the conventions makes it easier for users to navigate Julia's many varied packages.

As long as the package is not yet registered, renaming the package from OldName.jl to NewName.jl is reasonably straightforward:

  • Rename the GitHub repository to NewName.jl
  • Rename the file src/OldName.jl to src/NewName.jl
  • Rename the top-level module to NewName
  • Update tests, documentation, etc, to reference the new name
  • Once you are done renaming the package, retrigger registration. This will make a new pull request to General. It is helpful to comment in the old pull request that it can be closed, linking to the new one.

How do I rename an existing registered package?

Technically, you can't rename a package once registered, as this would break existing users. But you can re-register the package again under a new name with a new UUID, which basically has the same effect.

  • Follow the instructions above for renaming a package: rename on GitHub, rename files etc.
    • if you rename the repository so it has a new URL, make a PR to edit the URL stored in the registry for the old package name to point to the new URL (example). This allows the old versions of the package under the previous name to continue to work.
  • Generate a new UUID for the Project.toml
  • Increment the version in the Project.toml as a breaking change.
  • Register it as if it were a new package
  • Comment on the PR, that this is a rename.
  • It will have to go though the normal criteria for registring a new package.
    • In particular, even if you get it merged manually, it will need to wait 3 days from the PR being opened.
    • This gives others and yourself the chance to point out any naming issues.

You also should let your users know about the rename, e.g. by placing a note in the README, or opening PRs/issues on downstream packages to change over.

How do I transfer a package to an organization or another user?

Technically if you skip the second step things will keep working, because GitHub will redirect; but it is best practice. For this reason, when you try to register a new release, the Julia Registrator will complain if the second step is skipped.

Where do I report a problem with a package in the General registry?

Report it to the package repository.

How do I remove a package or version from the registry?

You can't. Package registrations are permanent. A version can not be overwritten in the registry, and code cannot be deleted.

Registry maintenance

The General registry is a shared resource that belongs to the entire Julia community. Therefore, we welcome comments and suggestions from everyone in the Julia community. However, all decisions regarding the General registry are ultimately up to the discretion of the registry maintainers.


The General registry is open for everyone to register packages in. The General registry is not a curated list of Julia packages. In particular this means that:

  • packages included in the General registry are not reviewed/scrutinized;
  • packages included in the General registry are not "official" packages and not endorsed/approved by the JuliaLang organization;
  • the General registry and its maintainers are not responsible for the package code you install through the General registry -- you are responsible for reviewing your code dependencies.