diff --git a/CHANGES b/CHANGES
index dd8e82f1ec4..8c0e3af6acf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -18,6 +18,8 @@ Bugs fixed
 
 * #10498: gettext: TypeError is raised when sorting warning messages if a node
   has no line number
+* #10493: html theme: :rst:dir:`topic` directive is rendered incorrectly with
+  docutils-0.18
 
 Testing
 --------