diff --git a/ChangeLog.md b/ChangeLog.md
index 3e28019d..b2f048e6 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -4,6 +4,10 @@ BIOM-Format ChangeLog
 biom-2.1.16-dev
 ---------------
 
+Performance improvements:
+
+* Decreased execution time of `import biom` by half with lazy imports. See PR[#987](https://github.com/biocore/biom-format/pull/987)
+
 Maintenance:
 
 * Python 3.7 and 3.8 removed from CI as they are [end-of-life](https://devguide.python.org/versions/). Python 3.13 added to CI. See PR[#986](https://github.com/biocore/biom-format/pull/986).