diff --git a/CHANGELOG.md b/CHANGELOG.md
index bbba3d9..83d9e0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 2.0.0
+
+- Corrects handling of `_id` column index when used with Mongoose v5.
+- Removes tests/support for custom `_id` column unique indexes.
+
 ## 1.0.6
 
 - Adds support for `uniqueCaseInsensitive` on index options.
diff --git a/package.json b/package.json
index 1092f9d..b362888 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mongoose-unique-validator",
-  "version": "1.0.6",
+  "version": "2.0.0",
   "description": "mongoose-unique-validator is a plugin which adds pre-save validation for unique fields within a Mongoose schema.",
   "main": "index.js",
   "scripts": {