diff --git a/browserify/browserify.d.ts b/browserify/browserify.d.ts
index 5326abaeb..02ac29bf2 100644
--- a/browserify/browserify.d.ts
+++ b/browserify/browserify.d.ts
@@ -22,6 +22,8 @@ interface BrowserifyObject extends NodeJS.EventEmitter {
 	ignore(file: string): BrowserifyObject;
 	transform(tr: string): BrowserifyObject;
 	transform(tr: Function): BrowserifyObject;
+	plugin(plugin: string, opts?: any): BrowserifyObject;
+  	plugin(plugin: Function, opts?: any): BrowserifyObject;
 }
 
 declare module "browserify" {
@@ -33,4 +35,4 @@ declare module "browserify" {
 	}): BrowserifyObject;
 
 	export = browserify;
-}
\ No newline at end of file
+}