diff --git a/fetch.bs b/fetch.bs
index 73a28f01b..312cbd02b 100644
--- a/fetch.bs
+++ b/fetch.bs
@@ -5616,6 +5616,8 @@ run these steps:
    <a>default `<code>User-Agent</code>` value</a>) to <var>httpRequest</var>'s
    <a for=request>header list</a>.
 
+  <li><p>Run the <a>WebDriver BiDi update request cache mode</a> steps with <var>request</var>.
+
    <li><p>If <var>httpRequest</var>'s <a for=request>cache mode</a> is "<code>default</code>" and
    <var>httpRequest</var>'s <a for=request>header list</a> <a for="header list">contains</a>
    `<code>If-Modified-Since</code>`,