diff --git a/Development/third_party/is-10/README.md b/Development/third_party/is-10/README.md
index 3360f110b..c5196cc7d 100644
--- a/Development/third_party/is-10/README.md
+++ b/Development/third_party/is-10/README.md
@@ -1,23 +1,8 @@
-# \[Work In Progress\] AMWA IS-10 NMOS Authorization Specification
+# AMWA IS-10 NMOS Authorization Specification
 
-AMWA IS-10 specifies an API for the authorization of other NMOS APIs. 
+This directory contains files from the [AMWA IS-10 NMOS Authorization Specification](https://github.com/AMWA-TV/is-10), in particular tagged versions of the JSON schemas used by the API specifications.
 
-## Getting started
+Original source code:
 
-Readers are advised to be familiar with:
-
-- The [overview of Networked Media Open Specifications](https://github.com/AMWA-TV/nmos)
-- [AMWA BCP-003](https://github.com/AMWA-TV/nmos-api-security) Best Practices for NMOS API Security
-
-Readers should then read the [documentation](docs/) in this repository, and the [APIs](APIs/), which are written in RAML -- if a suitable tool is not available for reading this, then [this](APIs/generateHTML) will create HTML versions.
-
-> HTML rendered versions of all NMOS Specifications are available on the [NMOS GitHub pages](https://amwa-tv.github.io/nmos)
-
-## Contents
-
-- README.md -- This file
-- [docs/](docs/) -- Documentation targeting those implementing APIs and clients.
-- [APIs/](APIs/) -- Normative specifications of APIs
-- [examples/](examples/) -- Example JSON requests and responses for APIs
-- [LICENSE](LICENSE) -- Licenses for software and text documents
-- [NOTICE](NOTICE) -- Disclaimer
+- (c) AMWA 2021
+- Licensed under the Apache License, Version 2.0; http://www.apache.org/licenses/LICENSE-2.0