diff --git a/CHANGES.md b/CHANGES.md
index 52cab9d1d..723934223 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -17,9 +17,11 @@
 ### Bug Fixes
 
 * filter: Rename internal force inclusion filtering functions [#1006][] (@victorlin)
+* filter: Split internal code into smaller files [#997][] (@victorlin)
 
 [#1002]: https://github.com/nextstrain/augur/pull/1002
 [#1006]: https://github.com/nextstrain/augur/pull/1006
+[#997]: https://github.com/nextstrain/augur/pull/997
 
 ## 16.0.3 (6 July 2022)