diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b474cd40..f7eb18233 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
   * Change to use straight quotes around strings in error messages (like 'this' instead of `this') (#915)
   * Add TypeScript "reference types" for node (#974)
   * Add support for hyphen as an option argument in subcommands (#697)
+  * Add support for a short option flag and its value to be concatenated (#599)
 
 2.20.0 / 2019-04-02
 ==================