diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79ef17d..3e48feb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.3.0] - 2026-03-09
+
+- Refactor configuration to use viper with context propagation instead of global variables
+- Allow formatters to use sub-config with their own config structs
+- Move preferred formatter to its own config field in formatters section
+- Update AGENTS.md with config system changes and testing guidelines
+
 ## [0.2.0] - 2026-03-07
 
 - Add ID field to Entry struct with auto-generation on marshal/unmarshal