diff --git a/src/module/main.js b/src/module/main.js
index 0714e57..32b2ede 100644
--- a/src/module/main.js
+++ b/src/module/main.js
@@ -1,4 +1,5 @@
 var Matter = module.exports = {};
+Matter.version = 'master';
 
 Matter.Body = require('../body/Body');
 Matter.Composite = require('../body/Composite');
@@ -47,4 +48,4 @@ Matter.World.addComposite = Matter.Composite.addComposite;
 Matter.World.addBody = Matter.Composite.addBody;
 Matter.World.addConstraint = Matter.Composite.addConstraint;
 Matter.World.clear = Matter.Composite.clear;
-Matter.Engine.run = Matter.Runner.run;
\ No newline at end of file
+Matter.Engine.run = Matter.Runner.run;