diff --git a/gulp-dtsm/gulp-dtsm-tests.ts b/gulp-dtsm/gulp-dtsm-tests.ts
new file mode 100644
index 000000000..f97f8705e
--- /dev/null
+++ b/gulp-dtsm/gulp-dtsm-tests.ts
@@ -0,0 +1,11 @@
+/// <reference path="./gulp-dtsm.d.ts" />
+/// <reference path="../node/node.d.ts" />
+/// <reference path="../gulp/gulp.d.ts" />
+
+import dtsm = require('gulp-dtsm');
+import gulp = require('gulp');
+
+var stream: NodeJS.WritableStream = dtsm();
+
+gulp.task('dtsm', () => gulp.src('./dtsm.json').pipe(dtsm()));
+
diff --git a/gulp-dtsm/gulp-dtsm.d.ts b/gulp-dtsm/gulp-dtsm.d.ts
new file mode 100644
index 000000000..a8fe7878f
--- /dev/null
+++ b/gulp-dtsm/gulp-dtsm.d.ts
@@ -0,0 +1,13 @@
+// Type definitions for gulp-dtsm 0.0.0
+// Project: https://github.com/9joneg/gulp-dtsm
+// Definitions by: Aya Morisawa <https://github.com/AyaMorisawa>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "gulp-dtsm" {
+  function dtsm(): NodeJS.WritableStream;
+
+  export = dtsm;
+}
+