diff --git a/CHANGELOG.md b/CHANGELOG.md
index c0dcc33..fe45204 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 Note: koa-websockets follows semver.
 
+## v2.0.0
+
+### Improvements
+
+* Bump ws major for DoS fix.
+
+## v1.1.0
+
+### Improvements
+
+* Bump ws for iojs 3.
+
 ## v1.0.0
 
 ### Improvements
diff --git a/package.json b/package.json
index 9b98127..1cbf545 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa-websocket",
-  "version": "1.1.0",
+  "version": "2.0.0",
   "description": "Light wrapper around Koa providing a websocket middleware handler that is koa-route compatible.",
   "main": "index.js",
   "scripts": {
@@ -27,11 +27,11 @@
     "co": "^4.4.0",
     "debug": "^2.1.2",
     "koa-compose": "^2.3.0",
-    "ws": "^0.8.0"
+    "ws": "^1.1.0"
   },
   "devDependencies": {
     "koa": "^1.0.0",
     "koa-route": "^2.4.0",
-    "mocha": "~2.2.5"
+    "mocha": "^2.5.3"
   }
 }