diff --git a/gulp-minify-css/gulp-minify-css-tests.ts b/gulp-minify-css/gulp-minify-css-tests.ts
new file mode 100644
index 0000000000..1375042dd2
--- /dev/null
+++ b/gulp-minify-css/gulp-minify-css-tests.ts
@@ -0,0 +1,11 @@
+/// <reference path="./gulp-minify-css.d.ts" />
+/// <reference path="../gulp/gulp.d.ts" />
+
+import gulp = require("gulp");
+import minifyCSS = require("gulp-minify-css");
+
+gulp.task("minify-css", () => {
+    gulp.src("css/**/*.css")
+        .pipe(minifyCSS({ keepBreaks: true }))
+        .pipe(gulp.dest("dist"));
+});
diff --git a/gulp-minify-css/gulp-minify-css.d.ts b/gulp-minify-css/gulp-minify-css.d.ts
new file mode 100644
index 0000000000..be6d45b8b1
--- /dev/null
+++ b/gulp-minify-css/gulp-minify-css.d.ts
@@ -0,0 +1,31 @@
+// Type definitions for gulp-minify-css
+// Project: https://github.com/jonathanepollack/gulp-minify-css
+// Definitions by: Keita Kagurazaka <https://github.com/k-kagurazaka>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module "gulp-minify-css" {
+
+    interface IOptions {
+        cache?: boolean;
+        advanced?: boolean;
+        aggressiveMerging?: boolean;
+        benchmark?: boolean;
+        compatibility?: string;
+        debug?: boolean;
+        inliner?: Object;
+        keepBreaks?: boolean;
+        keepSpecialComments?: string | number;
+        processImport?: boolean;
+        rebase?: boolean;
+        relativeTo?: string;
+        root?: string;
+        roundingPrecision?: number;
+        shorthandCompacting?: boolean;
+    }
+
+    function minifyCSS(options?: IOptions): NodeJS.ReadWriteStream;
+
+    export = minifyCSS;
+}