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Update dependencies to their latest versions. 
bun update

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Behavior

bun update updates packages to the latest versions that satisfy the version ranges in package.json. The lockfile is updated to reflect the new versions.

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Update all packages

bun update
Updates all dependencies in package.json.

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Update specific packages

bun update <package>
Updates only the specified package(s).

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Arguments

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Package name

bun update react

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Multiple packages

bun update react react-dom typescript

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Scoped packages

bun update @types/node

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Flags

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--latest

Update to the absolute latest version, ignoring semver ranges in package.json. 
bun update --latest
This updates all packages to their latest versions and modifies package.json with new version ranges. 
# Update specific packages to latest
bun update --latest react react-dom

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--interactive (-i)

Interactively select which packages to update. 
bun update --interactive
Displays an interactive prompt: 
? Select packages to update:
  ◯ react (18.2.0 → 18.3.0)
  ◉ typescript (5.0.0 → 5.3.0)
  ◯ @types/node (20.0.0 → 20.10.0)

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--no-save

Update packages without modifying package.json. 
bun update --no-save

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--cwd <path>

Run command in specified directory. 
bun update --cwd ./my-project

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--ignore-scripts

Skip running lifecycle scripts during update. 
bun update --ignore-scripts

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--dry-run

Simulate update without actually installing anything. 
bun update --dry-run
Shows what would be updated: 
$ bun update --dry-run

[dry-run] Would update:
  react: 18.2.0 → 18.3.0
  typescript: 5.0.0 → 5.3.0

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--verbose

Enable verbose logging. 
bun update --verbose

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--silent

Suppress all output except errors. 
bun update --silent

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Examples

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Update all dependencies

$ bun update
bun update v1.0.0

 Updated react: 18.2.0 → 18.2.1
 Updated typescript: 5.0.0 → 5.0.4

 2 packages updated [534ms]

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Update specific package

$ bun update react
bun update v1.0.0

 Updated react: 18.2.0 → 18.2.1

 1 package updated [287ms]

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Update to latest versions

$ bun update --latest
bun update v1.0.0

 Updated react: 18.2.0 → 19.0.0
 Updated typescript: 5.0.0 → 5.3.3

 package.json updated
 2 packages updated [621ms]

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Interactive update

$ bun update --interactive
bun update v1.0.0

? Select packages to update:
  ◉ react (18.2.0 → 18.3.0)
  ◉ typescript (5.0.0 → 5.3.0)
  ◯ @types/node (20.0.0 → 20.10.0)

 2 packages updated [445ms]

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Checking for outdated packages

To see which packages have available updates without installing them: 
bun outdated
See bun outdated for details.

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Version ranges

bun update respects semver ranges in package.json:
RangeDescriptionExample
^1.2.3Compatible with 1.2.3Updates to 1.x.x
~1.2.3Approximately 1.2.3Updates to 1.2.x
1.2.3Exact versionNo updates
*Any versionUpdates to latest
latestLatest tagUpdates to latest
Use --latest to ignore these ranges and update to the absolute latest version.

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Workspaces

In workspace projects, bun update updates dependencies across all workspaces: 
bun update
Update dependencies in a specific workspace: 
bun update --cwd packages/frontend react

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Aliases

These commands are equivalent: 
bun update
bun upgrade

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