Add a dependency

To add an npm package as a dependency, use bun add.

bun add zod

This adds the package to dependencies in package.json. By default, Bun uses the ^ range specifier, which accepts future minor and patch versions.

{
  "dependencies": {
    "zod": "^4.0.0"
  }
}

To pin your project to the exact version you installed, use --exact. This adds the package to dependencies without the ^.

bun add zod --exact

To specify an exact version or a tag:

bun add zod@3.0.0
bun add zod@next

See bun install.