diff --git a/static/releases.html b/static/releases.html
index b832663c..476d7525 100644
--- a/static/releases.html
+++ b/static/releases.html
@@ -77,6 +77,7 @@
                 <li>
                     <a href="#changelog">Changelog</a>
                     <ul>
+                        <li><a href="#2019.09.21.18">2019.09.21.18 preview</a></li>
                         <li><a href="#2019.09.18.14">2019.09.18.14 preview</a></li>
                         <li><a href="#2019.08.25.15">2019.08.25.15</a></li>
                         <li><a href="#2019.08.05.19">2019.08.05.19</a></li>
@@ -328,6 +329,26 @@
             <p>List of tagged releases. Snapshot releases without tags such as early releases of
             the project and early device support releases are not listed.</p>
 
+            <h3 id="2019.09.21.18">
+                <a href="#2019.09.21.18">2019.09.21.18 preview</a>
+            </h3>
+
+            <p>Tags:</p>
+            <ul>
+                <li><a href="https://github.com/GrapheneOS/platform_manifest/releases/tag/QP1A.190711.020.2019.09.21.18">QP1A.190711.020.2019.09.21.18</a> (Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL, emulator, generic, other targets)</li>
+            </ul>
+
+            <p>Changes since the 2019.09.18.14 release:</p>
+
+            <ul>
+                <li>Settings: use Mainline branding for APEX components</li>
+                <li>Vanadium: update to 77.0.3865.92</li>
+                <li>WebView: update to 77.0.3865.92</li>
+                <li>temporarily disable exec spawning for com.android.phone</li>
+                <li>Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a, Pixel 3a XL, mainline: disable updatable apex for simplicity</li>
+                <li>script: replace networkstack key</li>
+            </ul>
+
             <h3 id="2019.09.18.14">
                 <a href="#2019.09.18.14">2019.09.18.14 preview</a>
             </h3>