# Dependencies

Every external crate has a row here. `scripts/check-dep-docs.sh` enforces it.

| Crate | Version | Used by | Why |
|---|---|---|---|
| `serde` | 1.0.229 | `proto` | Derives serialization for every shared type. MIT OR Apache-2.0. |
| `serde_json` | 1.0.151 | `proto` | JSON for frames and log files. MIT OR Apache-2.0. |
| `humantime` | 2.4.0 | `proto` | RFC 3339 timestamps. No dependencies of its own. MIT OR Apache-2.0. |
| `toml` | 1.1.6 | `proto` tests; `brokerd` and `bxctl` from M3 | Parses grant files. MIT OR Apache-2.0. |