diff --git a/gulp-istanbul/gulp-istanbul-0.8.1.d.ts b/gulp-istanbul/gulp-istanbul-0.8.1.d.ts
new file mode 100644
index 000000000..3a10dfdba
--- /dev/null
+++ b/gulp-istanbul/gulp-istanbul-0.8.1.d.ts
@@ -0,0 +1,51 @@
+// Type definitions for gulp-istanbul v0.8.1
+// Project: https://github.com/SBoudrias/gulp-istanbul
+// Definitions by: Asana <https://asana.com>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts"/>
+
+declare module "gulp-istanbul" {
+    function GulpIstanbul(opts?: GulpIstanbul.Options): NodeJS.ReadWriteStream;
+
+    module GulpIstanbul {
+        export function hookRequire(): NodeJS.ReadWriteStream;
+        export function summarizeCoverage(opts?: {coverageVariable?: string}): Coverage;
+        export function writeReports(opts?: ReportOptions): NodeJS.ReadWriteStream;
+
+        interface Options {
+            coverageVariable?: string;
+            includeUntested?: boolean;
+            embedSource?: boolean;
+            preserveComments?: boolean;
+            noCompact?: boolean;
+            noAutoWrap?: boolean;
+            codeGenerationOptions?: Object;
+            debug?: boolean;
+            walkDebug?: boolean;
+        }
+
+        interface Coverage {
+            lines: CoverageStats;
+            statements: CoverageStats;
+            functions: CoverageStats;
+            branches: CoverageStats;
+        }
+
+        interface CoverageStats {
+            total: number;
+            covered: number;
+            skipped: number;
+            pct: number;
+        }
+
+        interface ReportOptions {
+            dir?: string;
+            reporters?: string[];
+            reportOpts?: {dir?: string};
+            coverageVariable?: string;
+        }
+    }
+
+    export = GulpIstanbul;
+}
diff --git a/gulp-istanbul/gulp-istanbul-tests.ts b/gulp-istanbul/gulp-istanbul-tests.ts
index 7f2327d07..0d64b53d0 100644
--- a/gulp-istanbul/gulp-istanbul-tests.ts
+++ b/gulp-istanbul/gulp-istanbul-tests.ts
@@ -29,4 +29,17 @@ gulp.task('test', function (cb) {
                 .pipe(istanbul.writeReports({reporters: ['text']})) // Creating the reports after tests runned
                 .on('end', cb);
         });
+});
+
+gulp.task('test', function (cb) {
+    gulp.src(['lib/**/*.js', 'main.js'])
+        .pipe(istanbul({includeUntested: true})) // Covering files
+        .pipe(istanbul.hookRequire())
+        .on('finish', function () {
+            gulp.src(['test/*.html'])
+                .pipe(testFramework())
+                .pipe(istanbul.writeReports({reporters: ['text']})) // Creating the reports after tests runned
+                .pipe(istanbul.enforceThresholds({ thresholds: { global: 90 } })) //
+                .on('end', cb);
+        });
 });
\ No newline at end of file
diff --git a/gulp-istanbul/gulp-istanbul.d.ts b/gulp-istanbul/gulp-istanbul.d.ts
index bf7a13bb0..d917d64b1 100644
--- a/gulp-istanbul/gulp-istanbul.d.ts
+++ b/gulp-istanbul/gulp-istanbul.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for gulp-istanbul
+// Type definitions for gulp-istanbul v0.9.0
 // Project: https://github.com/SBoudrias/gulp-istanbul
 // Definitions by: Asana <https://asana.com>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
@@ -12,6 +12,7 @@ declare module "gulp-istanbul" {
         export function hookRequire(): NodeJS.ReadWriteStream;
         export function summarizeCoverage(opts?: {coverageVariable?: string}): Coverage;
         export function writeReports(opts?: ReportOptions): NodeJS.ReadWriteStream;
+        export function enforceThresholds(opts?: ThresholdOptions): NodeJS.ReadWriteStream;
 
         interface Options {
             coverageVariable?: string;
@@ -45,7 +46,19 @@ declare module "gulp-istanbul" {
             reportOpts?: {dir?: string};
             coverageVariable?: string;
         }
+
+        interface ThresholdOptions {
+            coverageVariable?: string;
+            thresholds?: { global?: Coverage|number; each?: Coverage|number };
+        }
+
+        interface CoverageOptions {
+            lines?: number;
+            statements?: number;
+            functions?: number;
+            branches?: number;
+        }
     }
 
     export = GulpIstanbul;
-}
\ No newline at end of file
+}