diff --git a/README.md b/README.md
index 62496c6..d678b7b 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ ABNF syntax as per [RFC5234: Augmented BNF for Syntax Specifications: ABNF](http
 | `aquasecurity` | Namespace for use by Aqua Security. | Aqua Security | `RESERVED` |
 | `dependency-track` | Namespace for use by the Dependency-Track project. | Dependency-Track Maintainers | `RESERVED` |
 | `hoppr` | Namespace for the use by the Hoppr project. | Lockheed Martin | [hoppr taxonomy](https://hoppr.dev/architecture/cdx_taxonomy/) |
-| `sonatype` | Namespace for use by Sonatype | Sonatype | `RESERVED` |
+| `sonatype` | Namespace for use by Sonatype | Sonatype | [Sonatype Taxonomy Documentation](https://help.sonatype.com/lift/open-source-vulnerability-analysis/dependency-view/cyclonedx-lift-namespace-taxonomy) |
 | `spack` | Namespace for use by the Spack package manager. | Spack Maintainers | [Spack SBOM Project](https://github.com/spack/spack-sbom) |
 | `syft` | Namespace for use by the Syft project. | Syft Maintainers | [Syft Project](https://github.com/anchore/syft) |
 | `tern` | Namespace for use by the Tern project. | Tern Maintainers | [Tern Project](https://github.com/tern-tools/tern) |