diff --git a/docs/api.md b/docs/api.md
index cd666c89178..6889ca8b986 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -1,4 +1,4 @@
-# Puppeteer API v<!-- GEN:version -->0.9.0<!-- GEN:stop-->
+# Puppeteer API v<!-- GEN:version -->0.9.1-alpha<!-- GEN:stop-->
 
 ##### Table of Contents
 
diff --git a/package.json b/package.json
index d767df10560..36ae701f376 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "puppeteer",
-  "version": "0.9.0",
+  "version": "0.9.1-alpha",
   "description": "A high-level API to control headless Chrome over the DevTools Protocol",
   "main": "index.js",
   "repository": "github:GoogleChrome/puppeteer",