diff --git a/index.bs b/index.bs
index 8941928..a8209ac 100644
--- a/index.bs
+++ b/index.bs
@@ -291,6 +291,7 @@ A <dfn>client hints token</dfn> is a [=byte-lowercase=] representation of one of
   `Sec-CH-UA-Arch`,
   `Sec-CH-UA-Model`,
   `Sec-CH-UA-Platform`,
+  `Sec-CH-UA-Platform-Version`,
   `Sec-CH-UA` or
   `Sec-CH-UA-Mobile`.
 
@@ -315,6 +316,7 @@ the following [=policy-controlled features=]:
 - <code><dfn export>ch-ua-arch</dfn></code> which has a [=default allowlist=] of `'self'`
 - <code><dfn export>ch-ua-model</dfn></code> which has a [=default allowlist=] of `'self'`
 - <code><dfn export>ch-ua-platform</dfn></code> which has a [=default allowlist=] of `'self'`
+- <code><dfn export>ch-ua-platform-version</dfn></code> which has a [=default allowlist=] of `'self'`
 - <code><dfn export>ch-ua</dfn></code> which has a [=default allowlist=] of `'*'`
 - <code><dfn export>ch-ua-mobile</dfn></code> which has a [=default allowlist=] of `'*'`
 
@@ -371,6 +373,8 @@ When asked to <dfn>find client hint value</dfn>, given |hint| as input, switch o
   <dd>a suitable <a href=https://wicg.github.io/ua-client-hints/#sec-ch-ua-model>Model value</a>
   <dt>`UA-Platform`
   <dd>a suitable <a href=https://wicg.github.io/ua-client-hints/#sec-ch-ua-platform>Platform value</a>
+  <dt>`UA-Platform Version`
+  <dd>a suitable <a href=https://wicg.github.io/ua-client-hints/#sec-ch-ua-platform-version>Platform-Version value</a>
   <dt>`UA`
   <dd>a suitable <a href=https://wicg.github.io/ua-client-hints/#sec-ch-ua>UA value</a>
   <dt>`UA-Mobile`