diff --git a/ChangeLog.md b/ChangeLog.md
index 979f7bfc33e3..f6f4cc5b6ed8 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -29,6 +29,8 @@ See docs/process.md for more on how version tagging works.
 - The number of arguments passed to Embind function calls is now only verified
   with ASSERTIONS enabled. (#22591)
 - Optional arguments can now be omitted from Embind function calls. (#22591)
+- Recent changes to Binaryen included in this version significantly improve
+  the speed at which the post-link optimizations run for some large programs.
 
 3.1.67 - 09/17/24
 -----------------