diff --git a/.travis.yml b/.travis.yml
index c98f746..4cbb9c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@ before_install:
 
   # Setup Node.js version-specific dependencies
   - "test $TRAVIS_NODE_VERSION != '0.8' || npm rm --save-dev istanbul"
+  - "test $TRAVIS_NODE_VERSION = '0.8'  || npm install --save-dev @types/connect @types/node typescript"
   - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 4 || npm rm --save-dev $(grep -E '\"eslint\\S*\"' package.json | cut -d'\"' -f2)"
 
   # Update Node.js modules
@@ -29,8 +30,9 @@ before_install:
   - "test ! -d node_modules || npm rebuild"
 script:
   # Run test script, depending on istanbul install
-  - "test ! -z $(npm -ps ls istanbul) || npm test"
-  - "test   -z $(npm -ps ls istanbul) || npm run-script test-travis"
-  - "test   -z $(npm -ps ls eslint  ) || npm run-script lint"
+  - "test ! -z $(npm -ps ls istanbul  ) || npm test"
+  - "test   -z $(npm -ps ls istanbul  ) || npm run-script test-travis"
+  - "test   -z $(npm -ps ls eslint    ) || npm run-script lint"
+  - "test   -z $(npm -ps ls typescript) || npm run-script test-typings"
 after_script:
   - "test -e ./coverage/lcov.info && npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"
diff --git a/README.md b/README.md
index f6289dc..4c89aa3 100644
--- a/README.md
+++ b/README.md
@@ -151,6 +151,10 @@ app.use(vhost('api.example.com', function (req, res) {
 app.listen(3000)
 ```
 
+### Typescript support
+
+Typescript defintions are included in npm package.
+
 ## License
 
 [MIT](LICENSE)
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..cac7c10
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,24 @@
+import * as http from "http"
+
+declare namespace vhost {
+  interface RequestHandler {
+    (req: http.IncomingMessage, res: http.ServerResponse, next: Function): void
+  }
+}
+
+declare function vhost(hostname: string | RegExp, handle: vhost.RequestHandler): vhost.RequestHandler
+
+declare module "http" {
+  interface IVHost {
+    [key: number]: string
+    host: string,
+    hostname: string,
+    length: number
+  }
+
+  interface IncomingMessage {
+    vhost: IVHost
+  }
+}
+
+export = vhost
diff --git a/package.json b/package.json
index a137963..cde3898 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,8 @@
   "files": [
     "LICENSE",
     "HISTORY.md",
-    "index.js"
+    "index.js",
+    "index.d.ts"
   ],
   "engines": {
     "node": ">= 0.8.0"
@@ -31,6 +32,7 @@
   "scripts": {
     "lint": "eslint --plugin markdown --ext js,md .",
     "test": "mocha --reporter spec --bail --check-leaks test/",
+    "test-typings": "tsc -p tsconfig.json",
     "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/",
     "test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/"
   }
diff --git a/test/test.ts b/test/test.ts
new file mode 100644
index 0000000..2140fe0
--- /dev/null
+++ b/test/test.ts
@@ -0,0 +1,19 @@
+import * as vhost from "../index"
+import * as connect from "connect"
+
+const app = connect()
+
+// Using string hostname
+vhost("*.example.com", app)
+
+// Using regex hostname
+vhost(/(.*)\.example.com/, app)
+
+// Using request handler
+vhost("*.example.com",  (req, res, next) => {
+  req.vhost[0] === 'foo'
+  req.vhost[1] === 'bar'
+  req.vhost.host === 'foo.bar.example.com:8080'
+  req.vhost.hostname === 'foo.bar.example.com'
+  req.vhost.length === 2
+})
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..5a18eb0
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "lib": [
+      "es6"
+    ],
+    "noImplicitAny": true,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "types": [
+      "node"
+    ],
+    "noEmit": true,
+    "forceConsistentCasingInFileNames": true
+  },
+  "files": [
+    "index.d.ts",
+    "test/test.ts"
+  ]
+}