diff --git a/CHANGELOG.md b/CHANGELOG.md
index c236f601..f69ec54a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+# 0.2.21
+
+**Core Changes**
+
+- Add `rem` and `em` CSS units converter
+- Disallow `useDebouncedValue` a function
+
 # 0.2.20
 
 **Core Changes**
diff --git a/package.json b/package.json
index 912679b8..79540b6b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "foxact",
-  "version": "0.2.20",
+  "version": "0.2.21",
   "private": true,
   "description": "React Hooks/Utils done right. For browser, SSR, and React Server Components.",
   "homepage": "https://foxact.skk.moe",