diff --git a/README.md b/README.md
index 5039a88..2a6af26 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # updeep [![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Status][daviddm-image]][daviddm-url] 
-> Easily update immutable objects (frozen or not) in a declarative way.
+> Easily update nested objects and arrays (frozen or not) in a declarative
+> and immutable way.
 
 ## About
 
diff --git a/package.json b/package.json
index 38d2e20..f21ba1e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "updeep",
   "version": "0.1.3",
-  "description": "Easily update immutable objects (frozen or not) in a declarative way.",
+  "description": "Easily update nested objects and arrays (frozen or not) in a declarative and immutable way.",
   "homepage": "https://github.com/aaronjensen/updeep",
   "repository": {
     "type": "git",