diff --git a/xep-0144.xml b/xep-0144.xml
index 413093ed..724ebba7 100644
--- a/xep-0144.xml
+++ b/xep-0144.xml
@@ -317,4 +317,9 @@
 </xs:schema>
   ]]></code>
 </section1>
+
+<section1 topic='Acknowledgements' anchor='ack'>
+  <p>Thanks to Joe Hildebrand and Sicong Yao for their feedback.</p>
+</section1>
+
 </xep>