diff --git a/gulp-typescript/gulp-typescript.d.ts b/gulp-typescript/gulp-typescript.d.ts
index 84d4b5d9c..db8843508 100644
--- a/gulp-typescript/gulp-typescript.d.ts
+++ b/gulp-typescript/gulp-typescript.d.ts
@@ -20,10 +20,21 @@ declare module "gulp-typescript" {
             noImplicitAny?: boolean;
             noLib?: boolean;
             removeComments?: boolean;
-            sourceRoot?: string;
+            sourceRoot?: string; // use gulp-sourcemaps instead
             sortOutput?: boolean;
             target?: string;
             typescript?: any;
+            outFile?: string;
+            outDir?: string;
+            suppressImplicitAnyIndexErrors?: boolean;
+            jsx?: string;
+            declaration?: boolean;
+            emitDecoratorMetadata?: boolean;
+            experimentalAsyncFunctions?: boolean;
+            moduleResolution?: string;
+            noEmitHelpers?: boolean;
+            preserveConstEnums?: boolean;
+            isolatedModules?: boolean;
         }
 
         interface Project {
@@ -51,4 +62,4 @@ declare module "gulp-typescript" {
     }
 
     export = GulpTypescript;
-}
\ No newline at end of file
+}