diff --git a/tools.html b/tools.html
index 50d1fd21..23a65674 100644
--- a/tools.html
+++ b/tools.html
@@ -84,6 +84,8 @@
     --(no-)substitute
    ] [
     --no-out-link
+   ] [
+    --refresh
    ] [
     { 
      -v
@@ -273,6 +275,10 @@
       Passed on to <span class="citerefentry"><span class="refentrytitle">nix-build</span>(1)</span>
       when running <span class="command"><strong>home-manager build</strong></span>.
      </p></dd><dt><span class="term">
+     <code class="option">--refresh</code>
+    </span></dt><dd><p>
+      Passed on to <span class="citerefentry"><span class="refentrytitle">nix-build</span>(1)</span>
+     </p></dd><dt><span class="term">
      <code class="option">-v</code>
     , </span><span class="term">
      <code class="option">--verbose</code>