diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb42dae..460e00a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,11 @@
 
+v0.9.1 / Fri, 3 Nov 2017
+========================
+  * [806f1b1](https://github.com/projects/nconf/commit/806f1b1) 0.9.1 (`Matt Hamann`)
+  * [2bdf7e1](https://github.com/projects/nconf/commit/2bdf7e1) Clean Argv Store options (#290) (`Adrien Becchis`)
+  * [b9321b2](https://github.com/projects/nconf/commit/b9321b2) transformer can now return an undefined key (#289) (`Adrien Becchis`)
+  * [81ce0be](https://github.com/projects/nconf/commit/81ce0be) Update changelog (`Matt Hamann`)
+
 0.9.0 / Tue, 31 Oct 2017
 ========================
   * [b1ee63c](https://github.com/projects/nconf/commit/b1ee63c) fix error in transform function when dealing with dropped entries (#287) (`Augusto Franzoia`)
diff --git a/package-lock.json b/package-lock.json
index abd7189..ad7c357 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "nconf",
-  "version": "0.8.4",
+  "version": "0.9.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 11ca1bc..ff4c989 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "nconf",
   "description": "Hierarchical node.js configuration with files, environment variables, command-line arguments, and atomic object merging.",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "author": "Charlie Robbins <charlie.robbins@gmail.com>",
   "contributors": [
     "Matt Hamann <matthew.hamann@gmail.com>",