diff --git a/types/sinon-chrome/index.d.ts b/types/sinon-chrome/index.d.ts
index 67614ff6bc..d7fd948c63 100644
--- a/types/sinon-chrome/index.d.ts
+++ b/types/sinon-chrome/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/vitalets/sinon-chrome
 // Definitions by: Tim Perry <https://github.com/pimterry>
 //                 CRIMX <https://github.com/crimx>
+//                 kobanyan <https://github.com/kobanyan>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.4
 
@@ -37,6 +38,8 @@ declare namespace SinonChrome {
      */
     export function reset(): void;
 
+    export function registerPlugin(plugin: SinonChrome.plugins.Plugin): void;
+
     export var csi: Sinon.SinonSpy;
     export var loadTimes: Sinon.SinonSpy;
 }
@@ -353,6 +356,23 @@ declare namespace SinonChrome.permissions {
     export var request: SinonChromeStub;
 }
 
+declare namespace SinonChrome.plugins {
+    export interface Plugin {}
+    export interface Translation {
+        message: string;
+        placeholders?: object;
+    }
+    export interface Translations {
+        [key: string]: Translation;
+    }
+    export class I18nPlugin implements Plugin {
+        constructor(translations: Translations);
+    }
+    export class CookiePlugin implements Plugin {
+        constructor(state?: Array<chrome.cookies.Cookie>);
+    }
+}
+
 declare namespace SinonChrome.power {
     export var releaseKeepAwake: SinonChromeStub;
     export var requestKeepAwake: SinonChromeStub;
diff --git a/types/sinon-chrome/sinon-chrome-tests.ts b/types/sinon-chrome/sinon-chrome-tests.ts
index 58639b8a65..7ae8a3f862 100644
--- a/types/sinon-chrome/sinon-chrome-tests.ts
+++ b/types/sinon-chrome/sinon-chrome-tests.ts
@@ -32,3 +32,50 @@ var id: string = chromeStub.runtime.id;
 
 chromeStub.proxy.settings.set({value: { }, scope: 'regular'});
 chromeStub.proxy.settings.onChange.trigger();
+
+chromeStub.registerPlugin(new chromeStub.plugins.I18nPlugin({
+    one: {
+        message: 'Hi!'
+    },
+    two: {
+        message: 'Hi $first_name$ $last_name$!',
+        placeholders: {
+            first_name: {
+                content: '$1'
+            },
+            last_name: {
+                content: '$2'
+            }
+        }
+    }
+}));
+
+chromeStub.registerPlugin(new chromeStub.plugins.CookiePlugin());
+
+chromeStub.registerPlugin(new chromeStub.plugins.CookiePlugin(
+    [
+        {
+            domain: '.domain.com',
+            expirationDate: 1511612273,
+            hostOnly: false,
+            httpOnly: false,
+            name: 'COOKIE_NAME',
+            path: '/data',
+            secure: false,
+            session: false,
+            storeId: '0',
+            value: 'COOKIE_VALUE'
+        },
+        {
+            domain: 'other-domain.com',
+            hostOnly: false,
+            httpOnly: false,
+            name: 'other-cookie',
+            path: '/',
+            secure: false,
+            session: true,
+            storeId: '0',
+            value: '123'
+        }
+    ]
+));