diff --git a/nix-darwin-options.xhtml b/nix-darwin-options.xhtml
index 175305e68..2f7352f9b 100644
--- a/nix-darwin-options.xhtml
+++ b/nix-darwin-options.xhtml
@@ -46,6 +46,34 @@ boolean</p>
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">false</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/nixos/common.nix" target="_top">
+&lt;home-manager/nixos/common.nix&gt;
+</a></code>
+</td></tr>
+</table>
+</dd>
+<dt>
+ <span class="term">
+ <a id="nix-darwin-opt-home-manager.backupCommand"></a><a class="term" href="nix-darwin-options.xhtml#nix-darwin-opt-home-manager.backupCommand"><code class="option">home-manager.backupCommand</code>
+  </a>
+ </span>
+</dt>
+<dd>
+<p>On activation run this command on each existing file
+rather than exiting with an error.</p>
+
+<p><span class="emphasis"><em>Type:</em></span>
+null or string or absolute path</p>
+
+<p><span class="emphasis"><em>Default:</em></span>
+<code class="literal">null</code></p>
+
+<p><span class="emphasis"><em>Example:</em></span>
+<code class="literal">&#x27;&#x27;${pkgs.trash-cli}/bin/trash</code></p>
+
 <p><span class="emphasis"><em>Declared by:</em></span></p>
 <table border="0" summary="Simple list" class="simplelist">
 <tr><td>
diff --git a/nixos-options.xhtml b/nixos-options.xhtml
index 90edbd457..55c617be6 100644
--- a/nixos-options.xhtml
+++ b/nixos-options.xhtml
@@ -46,6 +46,34 @@ boolean</p>
 <p><span class="emphasis"><em>Default:</em></span>
 <code class="literal">false</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/nixos/common.nix" target="_top">
+&lt;home-manager/nixos/common.nix&gt;
+</a></code>
+</td></tr>
+</table>
+</dd>
+<dt>
+ <span class="term">
+ <a id="nixos-opt-home-manager.backupCommand"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.backupCommand"><code class="option">home-manager.backupCommand</code>
+  </a>
+ </span>
+</dt>
+<dd>
+<p>On activation run this command on each existing file
+rather than exiting with an error.</p>
+
+<p><span class="emphasis"><em>Type:</em></span>
+null or string or absolute path</p>
+
+<p><span class="emphasis"><em>Default:</em></span>
+<code class="literal">null</code></p>
+
+<p><span class="emphasis"><em>Example:</em></span>
+<code class="literal">&#x27;&#x27;${pkgs.trash-cli}/bin/trash</code></p>
+
 <p><span class="emphasis"><em>Declared by:</em></span></p>
 <table border="0" summary="Simple list" class="simplelist">
 <tr><td>