diff --git a/CHANGES b/CHANGES
index 9547c4bad..2b93addbc 100644
--- a/CHANGES
+++ b/CHANGES
@@ -26,6 +26,8 @@ Bugs fixed
 ----------
 
 * #9866: autodoc: doccoment for the imported class was ignored
+* autodoc: debug message is shown on building document using NewTypes with
+  Python 3.10
 * #9878: mathjax: MathJax configuration is placed after loading MathJax itself
 * #9857: Generated RFC links use outdated base url