diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc554c7c..5228cfca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 All notable changes to this project will be documented in this file.
 
 ## 0.4.0 - ??
+- Add `string/format` and `buffer/format`.
+- Remove `string/pretty` and `string/number`.
 - `make-image` function creates pre compiled images for janet. These images
   link to the core library. They can be loaded via require or manually via
   `load-image`.