diff --git a/VERSION b/VERSION
index a3df0a6..ac39a10 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.0
+0.9.0
diff --git a/benchmark/index.html b/benchmark/index.html
index 5d2fe3f..ac30027 100644
--- a/benchmark/index.html
+++ b/benchmark/index.html
@@ -33,7 +33,7 @@
       </tr>
     </table>
 
-    <script src="../browser/peg-0.8.0.js"></script>
+    <script src="../browser/peg-0.9.0.js"></script>
     <script src="vendor/jquery/jquery.js"></script>
     <script src="vendor/jquery.scrollto/jquery.scrollTo.js"></script>
     <script src="benchmarks.js"></script>
diff --git a/lib/compiler/passes/generate-javascript.js b/lib/compiler/passes/generate-javascript.js
index b262994..c4843f3 100644
--- a/lib/compiler/passes/generate-javascript.js
+++ b/lib/compiler/passes/generate-javascript.js
@@ -766,7 +766,7 @@ function generateJavascript(ast, options) {
     '  "use strict";',
     '',
     '  /*',
-    '   * Generated by PEG.js 0.8.0.',
+    '   * Generated by PEG.js 0.9.0.',
     '   *',
     '   * http://pegjs.org/',
     '   */',
diff --git a/lib/parser.js b/lib/parser.js
index 02bfa07..cda8fad 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -2,7 +2,7 @@ module.exports = (function() {
   "use strict";
 
   /*
-   * Generated by PEG.js 0.8.0.
+   * Generated by PEG.js 0.9.0.
    *
    * http://pegjs.org/
    */
diff --git a/lib/peg.js b/lib/peg.js
index d806284..912cbe8 100644
--- a/lib/peg.js
+++ b/lib/peg.js
@@ -5,7 +5,7 @@ var arrays  = require("./utils/arrays"),
 
 var PEG = {
   /* PEG.js version (uses semantic versioning). */
-  VERSION: "0.8.0",
+  VERSION: "0.9.0",
 
   GrammarError: require("./grammar-error"),
   parser:       require("./parser"),
diff --git a/package.json b/package.json
index 4ae4f89..cc17e37 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name":            "pegjs",
-  "version":         "0.8.0",
+  "version":         "0.9.0",
   "description":     "Parser generator for JavaScript",
   "homepage":        "http://pegjs.org/",
   "license":         "MIT",
diff --git a/spec/index.html b/spec/index.html
index ae8f667..db65963 100644
--- a/spec/index.html
+++ b/spec/index.html
@@ -5,7 +5,7 @@
     <link rel="stylesheet" href="vendor/jasmine/jasmine.css">
     <script src="vendor/jasmine/jasmine.js"></script>
     <script src="vendor/jasmine/jasmine-html.js"></script>
-    <script src="../browser/peg-0.8.0.js"></script>
+    <script src="../browser/peg-0.9.0.js"></script>
     <script src="helpers.js"></script>
     <script src="unit/parser.spec.js"></script>
     <script src="unit/compiler/passes/helpers.js"></script>