diff --git a/reference/html/appendix.html b/reference/html/appendix.html
index dba619a2..5bb481eb 100644
--- a/reference/html/appendix.html
+++ b/reference/html/appendix.html
@@ -265,6 +265,11 @@ Also, you can define your own properties.
 <td class="tableblock halign-left valign-top"><p class="tableblock">The connect timeout in millis, the default is 45s.</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">spring.cloud.gateway.httpclient.max-header-size</p></td>
+<td class="tableblock halign-left valign-top"></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">The max response header size.</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock">spring.cloud.gateway.httpclient.pool.acquire-timeout</p></td>
 <td class="tableblock halign-left valign-top"></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Only for type FIXED, the maximum time in millis to wait for aquiring.</p></td>