diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33a9a74..5430142 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.8.0 - 2019-09-16
+Enhancements:
+* Add `unique` validation to arrays
+
 ## 1.7.0 - 2019-09-14
 Enhancements:
 * Add method to clone structures
diff --git a/dist/structure.js b/dist/structure.js
index 82fa32b..f2d3b18 100644
--- a/dist/structure.js
+++ b/dist/structure.js
@@ -602,7 +602,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	var _require = __webpack_require__(10),
 	    mapToJoi = _require.mapToJoi;
 
-	var joiMappings = [['minLength', 'min', true], ['maxLength', 'max', true], ['exactLength', 'length', true]];
+	var joiMappings = [['minLength', 'min', true], ['maxLength', 'max', true], ['exactLength', 'length', true], ['unique', 'unique']];
 
 	module.exports = function arrayValidation(typeDescriptor, itemTypeDescriptor) {
 	  var joiSchema = joi.array().items(itemTypeDescriptor.validation);
diff --git a/package.json b/package.json
index 0e4230e..cd57185 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "structure",
-  "version": "1.7.0",
+  "version": "1.8.0",
   "description": "A simple schema/attributes library built on top of modern JavaScript",
   "main": "src/index.js",
   "browser": "dist/structure.js",