diff --git a/options.html b/options.html
index d310f0262..1868e06a8 100644
--- a/options.html
+++ b/options.html
@@ -976,6 +976,9 @@ is assumed to already be available in your profile.</p><p><span class="emphasis"
   gtk-recent-files-limit = 20;
 }</pre><p><span class="emphasis"><em>Declared by:</em></span></p><table border="0" summary="Simple list" class="simplelist"><tr><td><code class="filename"><a class="filename" href="https://github.com/nix-community/home-manager/blob/master/modules/misc/gtk.nix#blob-path" target="_top">
                     &lt;home-manager/modules/misc/gtk.nix&gt;
+                </a></code></td></tr></table></dd><dt><span class="term"><a id="opt-gtk.gtk4.extraCss"></a><a class="term" href="options.html#opt-gtk.gtk4.extraCss"><code class="option">gtk.gtk4.extraCss</code></a></span></dt><dd><p>Extra configuration lines to add verbatim to
+<code class="filename">$XDG_CONFIG_HOME/gtk-4.0/gtk.css</code>.</p><p><span class="emphasis"><em>Type:</em></span> strings concatenated with "\n"</p><p><span class="emphasis"><em>Default:</em></span> <code class="literal">""</code></p><p><span class="emphasis"><em>Declared by:</em></span></p><table border="0" summary="Simple list" class="simplelist"><tr><td><code class="filename"><a class="filename" href="https://github.com/nix-community/home-manager/blob/master/modules/misc/gtk.nix#blob-path" target="_top">
+                    &lt;home-manager/modules/misc/gtk.nix&gt;
                 </a></code></td></tr></table></dd><dt><span class="term"><a id="opt-gtk.iconTheme"></a><a class="term" href="options.html#opt-gtk.iconTheme"><code class="option">gtk.iconTheme</code></a></span></dt><dd><p>The icon theme to use.</p><p><span class="emphasis"><em>Type:</em></span> null or (submodule)</p><p><span class="emphasis"><em>Default:</em></span> <code class="literal">null</code></p><p><span class="emphasis"><em>Declared by:</em></span></p><table border="0" summary="Simple list" class="simplelist"><tr><td><code class="filename"><a class="filename" href="https://github.com/nix-community/home-manager/blob/master/modules/misc/gtk.nix#blob-path" target="_top">
                     &lt;home-manager/modules/misc/gtk.nix&gt;
                 </a></code></td></tr></table></dd><dt><span class="term"><a id="opt-gtk.iconTheme.package"></a><a class="term" href="options.html#opt-gtk.iconTheme.package"><code class="option">gtk.iconTheme.package</code></a></span></dt><dd><p>Package providing the icon theme. This package will be installed