diff --git a/types/statsd-client/index.d.ts b/types/statsd-client/index.d.ts
index 7bb83b7393..2b5c0c59cc 100644
--- a/types/statsd-client/index.d.ts
+++ b/types/statsd-client/index.d.ts
@@ -1,9 +1,11 @@
-// Type definitions for statsd-client v0.1.0
+// Type definitions for statsd-client v0.4.0
 // Project: https://github.com/msiebuhr/node-statsd-client
 // Definitions by: Peter Kooijmans <https://github.com/peterkooijmans>
+//                 Christopher Eck <https://github.com/chrisleck>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
 
-
+import * as express from "express";
 
 interface CommonOptions {
     /**
@@ -16,6 +18,13 @@ interface CommonOptions {
      */
     debug?: boolean;
 
+    /**
+     * Object of string key/value pairs which will be appended on 
+     * to all StatsD payloads (excluding raw payloads)
+     * (default {})
+     */
+    tags?: { [key: string]: string };
+
     /**
      * User specifically wants to use tcp (default false)
      */
@@ -79,24 +88,53 @@ interface HttpOptions extends CommonOptions {
     method?: string;
 }
 
+interface ExpressMiddlewareOptions {
+    /**
+     * Metric name to use for reporting if a matching route is not
+     * found (default "unknown_express_route").
+     */
+    notFoundRouteName?: string;
+
+    /**
+     * Optional callback called after reporting metrics for an
+     * express route.
+     */
+    onResponseEnd?: (client: StatsdClient, startTime: Date, req: express.Request, res: express.Response) => void;
+
+    /**
+     * Enables inclusion of per-URL response code and timing
+     * metrics (default false).
+     */
+    timeByUrl?: boolean;
+}
+
 declare class StatsdClient {
     constructor(options: TcpOptions | UdpOptions | HttpOptions);
 
-    counter(metric: string, delta: number): void;
-    increment(metric: string, delta?: number): void;
-    decrement(metric: string, delta?: number): void;
+    counter(metric: string, delta: number, tags?: {}): this;
+    increment(metric: string, delta?: number, tags?: {}): this;
+    decrement(metric: string, delta?: number, tags?: {}): this;
 
-    gauge(name: string, value: number): void;
-    gaugeDelta(name: string, delta: number): void;
+    gauge(name: string, value: number, tags?: {}): this;
+    gaugeDelta(name: string, delta: number, tags?: {}): this;
 
-    set(name: string, value: number): void;
+    set(name: string, value: number, tags?: {}): this;
 
-    timing(name: string, start: Date): void;
-    timing(name: string, duration: number): void;
+    timing(name: string, startOrDuration: Date | number, tags?: {}): this;    
 
-    close(): void;
+    histogram(name: string, value: number, tags?: {}): this;
+
+    raw(rawData: string): this;
+
+    close(): this;
 
     getChildClient(name: string): StatsdClient;
+
+    formatTags(tags?: {}): string;
+
+    helpers: {
+        getExpressMiddleware(prefix?: string, options?: ExpressMiddlewareOptions): express.RequestHandler;
+    };
 }
 
 declare namespace StatsdClient {}
diff --git a/types/statsd-client/statsd-client-tests.ts b/types/statsd-client/statsd-client-tests.ts
index d8490448a5..205b28b851 100644
--- a/types/statsd-client/statsd-client-tests.ts
+++ b/types/statsd-client/statsd-client-tests.ts
@@ -1,9 +1,9 @@
 
 import SDC = require("statsd-client");
 
-var sdc = new SDC( { host: 'statsd.example.com' });
+let sdc = new SDC( { host: 'statsd.example.com' });
 
-var timer = new Date();
+const timer = new Date();
 sdc.increment('some.counter'); // Increment by one.
 sdc.gauge('some.gauge', 10); // Set gauge to 10
 sdc.timing('some.timer', timer); // Calculates time diff
@@ -11,12 +11,16 @@ sdc.timing('some.timer', timer); // Calculates time diff
 sdc.close(); // Optional - stop NOW
 
 // Initialization
-sdc = new SDC({host: 'statsd.example.com', port: 8124, debug: true});
+sdc = new SDC({host: 'statsd.example.com', port: 8124, debug: true, tags: {foo: 'bar'}});
 
 // Counting stuff
 sdc.increment('systemname.subsystem.value'); // Increment by one
 sdc.decrement('systemname.subsystem.value', -10); // Decrement by 10
 sdc.counter('systemname.subsystem.value', 100); // Increment by 100
+sdc.increment('systemname.subsystem.value.tagged', 1, {biz: 'baz'}); // Increment tagged metric by one
+sdc.decrement('systemname.subsystem.value.tagged', -10, {biz: 'baz'}); // Decrement tagged metric  by 10
+sdc.counter('systemname.subsystem.value.tagged', 100, {biz: 'baz'}); // Increment tagged metric  by 100
+
 
 // Gauges
 sdc.gauge('what.you.gauge', 100);
@@ -24,17 +28,37 @@ sdc.gaugeDelta('what.you.gauge', 20);  // Will now count 120
 sdc.gaugeDelta('what.you.gauge', -70); // Will now count 50
 sdc.gauge('what.you.gauge', 10);       // Will now count 10
 
+sdc.gauge('what.you.gauge.tagged', 100, {biz: 'baz'});
+sdc.gaugeDelta('what.you.gauge.tagged', 20, {biz: 'baz'});  // Will now count 120
+sdc.gaugeDelta('what.you.gauge.tagged', -70, {biz: 'baz'}); // Will now count 50
+sdc.gauge('what.you.gauge.tagged', 10, {biz: 'baz'});       // Will now count 10
+
 // Set
 sdc.set('your.set', 200);
+sdc.set('your.set.tagged', 200, {biz: 'baz'});
 
 // Timeouts
-var start = new Date();
+let start = new Date();
 setTimeout(function () {
     sdc.timing('random.timeout', start);
 }, 100 * Math.random());
 
+setTimeout(function () {
+    sdc.timing('random.timeout.tagged', start, {biz: 'baz'});
+}, 100 * Math.random());
+
+// Histogram
+sdc.histogram('histogram.stuff', 40);
+sdc.histogram('histogram.stuff', 44, {biz: 'baz'});
+
+// Raw string output
+sdc.raw('my.metric:123|g');
+
+// Internal tags formatting
+sdc.formatTags({biz: 'baz'});
+
 // Stopping gracefully
-var start = new Date();
+start = new Date();
 setTimeout(function () {
     sdc.timing('random.timeout', start); // 2 - implicitly re-creates socket.
     sdc.close(); // 3 - Closes socket after last use.
@@ -43,14 +67,17 @@ sdc.close(); // 1 - Closes socket early.
 
 // Prefix magic
 // Create generic client
-var sdc = new SDC({host: 'statsd.example.com', prefix: 'systemname'});
+sdc = new SDC({host: 'statsd.example.com', prefix: 'systemname'});
 sdc.increment('foo'); // Increments 'systemname.foo'
 // ... do great stuff ...
 
 // Subsystem A
-var sdcA = sdc.getChildClient('a');
+const sdcA = sdc.getChildClient('a');
 sdcA.increment('foo'); // Increments 'systemname.a.foo'
 
 // Subsystem B
-var sdcB = sdc.getChildClient('b');
+const sdcB = sdc.getChildClient('b');
 sdcB.increment('foo'); // Increments 'systemname.b.foo'
+
+// Express middleware helper
+sdc.helpers.getExpressMiddleware('express.metrics', {timeByUrl: true}); // Returns an express handler