diff --git a/CHANGES b/CHANGES
index 1f33b88a890..18554046a8a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -23,6 +23,7 @@ Bugs fixed
 * #9644: autodoc: Crashed on getting source info from problematic object
 * #9630: autosummary: Failed to build summary table if :confval:`primary_domain`
   is not 'py'
+* #9670: html: Fix download file with special characters
 
 Testing
 --------