diff --git a/public/source/index.php b/public/source/index.php
index 341df94..3c22920 100644
--- a/public/source/index.php
+++ b/public/source/index.php
@@ -872,6 +872,7 @@
         <h3>Changes from 25 January 2020 to 09 August 2020</h3>
         <ul>
           <li>Use <code>response_type=code</code> and make it required, to bring it in line with OAuth 2.0</li>
+          <li>Require <code>grant_type=authorization_code</code> when redeeming the authorization code at the authorization endpoint</li>
           <li>Drop the <code>me</code> parameter from the token endpoint request</li>
           <li>Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
           <li>Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
diff --git a/public/spec/20200809/index.html b/public/spec/20200809/index.html
index 3e9d739..6ba880b 100644
--- a/public/spec/20200809/index.html
+++ b/public/spec/20200809/index.html
@@ -809,10 +809,11 @@ <h2 id="c-change-log"><bdi class="secno">C. </bdi>Change Log<a class="self-link"
         <h3 id="c-1-changes-from-25-january-2020-to-this-version"><bdi class="secno">C.1 </bdi>Changes from 25 January 2020 to this version<a class="self-link" aria-label="§" href="#changes-from-25-january-2020-to-this-version"></a></h3>
         <ul>
           <li id="changes-from-25-january-2020-to-this-version-li-1">Use <code>response_type=code</code> and make it required, to bring it in line with OAuth 2.0</li>
-          <li id="changes-from-25-january-2020-to-this-version-li-2">Drop the <code>me</code> parameter from the token endpoint request</li>
-          <li id="changes-from-25-january-2020-to-this-version-li-3">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
-          <li id="changes-from-25-january-2020-to-this-version-li-4">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
-          <li id="changes-from-25-january-2020-to-this-version-li-5">Editorial changes and rearranging sections</li>
+          <li id="changes-from-25-january-2020-to-this-version-li-2">Require <code>grant_type=authorization_code</code> when redeeming the authorization code at the authorization endpoint</li>
+          <li id="changes-from-25-january-2020-to-this-version-li-3">Drop the <code>me</code> parameter from the token endpoint request</li>
+          <li id="changes-from-25-january-2020-to-this-version-li-4">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
+          <li id="changes-from-25-january-2020-to-this-version-li-5">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
+          <li id="changes-from-25-january-2020-to-this-version-li-6">Editorial changes and rearranging sections</li>
         </ul>
       </section>
 
diff --git a/public/spec/20200926/index.html b/public/spec/20200926/index.html
index 1c0b735..57e430f 100644
--- a/public/spec/20200926/index.html
+++ b/public/spec/20200926/index.html
@@ -899,10 +899,11 @@ <h3 id="c-1-changes-from-09-august-2020-to-this-version"><bdi class="secno">C.1
         <h3 id="c-2-changes-from-25-january-2020-to-09-august-2020"><bdi class="secno">C.2 </bdi>Changes from 25 January 2020 to 09 August 2020<a class="self-link" aria-label="§" href="#changes-from-25-january-2020-to-09-august-2020"></a></h3>
         <ul>
           <li id="changes-from-25-january-2020-to-09-august-2020-li-1">Use <code>response_type=code</code> and make it required, to bring it in line with OAuth 2.0</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-2">Drop the <code>me</code> parameter from the token endpoint request</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-3">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-4">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-5">Editorial changes and rearranging sections</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-2">Require <code>grant_type=authorization_code</code> when redeeming the authorization code at the authorization endpoint</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-3">Drop the <code>me</code> parameter from the token endpoint request</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-4">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-5">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-6">Editorial changes and rearranging sections</li>
         </ul>
       </section>
 
diff --git a/public/spec/index.html b/public/spec/index.html
index f085716..791cd9e 100644
--- a/public/spec/index.html
+++ b/public/spec/index.html
@@ -899,10 +899,11 @@ <h3 id="c-1-changes-from-09-august-2020-to-this-version"><bdi class="secno">C.1
         <h3 id="c-2-changes-from-25-january-2020-to-09-august-2020"><bdi class="secno">C.2 </bdi>Changes from 25 January 2020 to 09 August 2020<a class="self-link" aria-label="§" href="#changes-from-25-january-2020-to-09-august-2020"></a></h3>
         <ul>
           <li id="changes-from-25-january-2020-to-09-august-2020-li-1">Use <code>response_type=code</code> and make it required, to bring it in line with OAuth 2.0</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-2">Drop the <code>me</code> parameter from the token endpoint request</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-3">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-4">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
-          <li id="changes-from-25-january-2020-to-09-august-2020-li-5">Editorial changes and rearranging sections</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-2">Require <code>grant_type=authorization_code</code> when redeeming the authorization code at the authorization endpoint</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-3">Drop the <code>me</code> parameter from the token endpoint request</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-4">Consolidate the authentication and authorization sections into a single section, describing only the difference which is the response returned.</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-5">Drop the section describing communication between token endpoints and authorization endpoints as it was underused</li>
+          <li id="changes-from-25-january-2020-to-09-august-2020-li-6">Editorial changes and rearranging sections</li>
         </ul>
       </section>