diff --git a/CHANGELOG.md b/CHANGELOG.md
index e61d6ad2..c954e200 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,18 @@
 All notable changes to this project will be documented in this file. See
 [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+# [4.0.0](https://github.com/ScaleLeap/amazon-marketplaces/compare/v3.1.2...v4.0.0) (2020-03-10)
+
+
+### Features
+
+* adds AmazonMarketplaceAdvertisingRegion object ([87c27c9](https://github.com/ScaleLeap/amazon-marketplaces/commit/87c27c9ac6ba056f7c8d6499fa8f3c33f8ef5a68))
+
+
+### BREAKING CHANGES
+
+* Adds AmazonMarketplaceAdvertisingRegion object suppot.
+
 ## [3.1.2](https://github.com/ScaleLeap/amazon-marketplaces/compare/v3.1.1...v3.1.2) (2020-03-09)
 
 
diff --git a/package-lock.json b/package-lock.json
index a1f2b204..eb8653e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@scaleleap/amazon-marketplaces",
-  "version": "3.1.2",
+  "version": "4.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index bf261303..7fef3a6e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@scaleleap/amazon-marketplaces",
-  "version": "3.1.2",
+  "version": "4.0.0",
   "publishConfig": {
     "access": "public"
   },