diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd192ab9b..65a179e8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ Released ...
 
 Summary: TODO
 
-- Default PNG encoding method when `png` is supplied is now `png8:m=h`, so paletted png using hextree color quantization.
+- Default PNG encoding method when `png` is supplied is now `png8:m=h`, so paletted png using hextree color quantization (#2028)
   Use `png32` now for full color png.
 
 - Added support for more seamless blurring by rendering to a larger internal image to avoid edge effects (#1478)