diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4085d2b5b..71fe28796 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ Fixed:
 Changed:
 
   * Record version information in `pg:MetadataItem`, #637
+  * New method `Processor.zip_input_files` to uniformly handle files from multiple input file groups, #635
 
 ## [2.19.0] - 2020-10-23