jarle Upgrade Bun to the latest version
Bun can upgrade itself using the built-in bun upgrade command. This is the fastest way to get the latest features and bug fixes.
bun upgrade
This downloads and installs the latest stable version of Bun, replacing the currently installed version.
To see the current version of Bun, run bun --version.
Verify the upgrade
After upgrading, verify the new version:
bun --version
# Output: 1.x.y
# See the exact commit of the Bun binary
bun --revision
# Output: 1.x.y+abc123def
Upgrade to canary builds
Canary builds are automatically released on every commit to the main branch. These are untested but useful for trying new features or verifying bug fixes before they're released.
bun upgrade --canary
Canary builds are not recommended for production use. They may contain bugs or breaking changes.
Switch back to stable
If you're on a canary build and want to return to the latest stable release:
bun upgrade --stable
Install a specific version
To install a specific version of Bun, use the install script with a version tag:
Package manager users
If you installed Bun via a package manager, use that package manager to upgrade instead of bun upgrade to avoid conflicts.
Scoop users
To avoid conflicts with Scoop, use scoop update bun instead.
See also
- Installation — Install Bun for the first time
- Update packages — Update dependencies to latest versions