diff --git a/CHANGELOG.md b/CHANGELOG.md
index c61b08c..e1e7264 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # kv-toolbox change log
 
+## Version 0.20.0
+
+- feat: arrays, objects, maps and sets are deeply serialized (bf8f285)
+
+  Previously only value supported by JSON directly were serialized as values and
+  keys of arrays, objects, maps and sets. While kv-toolbox can deserialize the
+  old format, it supports a new JSON format that allows all value supported by
+  Deno KV to be properly serialized and deserialized.
+
+- docs: update changelog (38bd7cd)
+
 ## Version 0.19.1
 
 - fix: properly handle `Infinity` and `NaN` (410d214)
diff --git a/deno.json b/deno.json
index f4b9cc2..7aa624a 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "name": "@kitsonk/kv-toolbox",
-  "version": "0.19.1",
+  "version": "0.20.0",
   "exports": {
     ".": "./toolbox.ts",
     "./batched_atomic": "./batched_atomic.ts",