diff --git a/lib/node-http-proxy/proxy-table.js b/lib/node-http-proxy/proxy-table.js
index 407ba47..84b17a3 100644
--- a/lib/node-http-proxy/proxy-table.js
+++ b/lib/node-http-proxy/proxy-table.js
@@ -84,6 +84,35 @@ var ProxyTable = exports.ProxyTable = function (options) {
 //
 util.inherits(ProxyTable, events.EventEmitter);
 
+//
+// ### function addRoute (route, target)
+// #### @route {String} String containing route coming in
+// #### @target {String} String containing the target
+// Adds a host-based route to this instance.
+//
+ProxyTable.prototype.addRoute = function (route, target) {
+  if (!this.router) {
+    throw new Error('Cannot update ProxyTable routes without router.');
+  }
+
+  this.router[route] = target;
+  this.setRoutes(this.router);
+};
+
+//
+// ### function removeRoute (route)
+// #### @route {String} String containing route to remove
+// Removes a host-based route from this instance.
+//
+ProxyTable.prototype.removeRoute = function (route) {
+  if (!this.router) {
+    throw new Error('Cannot update ProxyTable routes without router.');
+  }
+
+  delete this.router[route];
+  this.setRoutes(this.router);
+};
+
 //
 // ### function setRoutes (router)
 // #### @router {Object} Object containing the host based routes
diff --git a/lib/node-http-proxy/routing-proxy.js b/lib/node-http-proxy/routing-proxy.js
index b9b8a17..98c7a79 100644
--- a/lib/node-http-proxy/routing-proxy.js
+++ b/lib/node-http-proxy/routing-proxy.js
@@ -276,6 +276,29 @@ RoutingProxy.prototype.proxyWebSocketRequest = function (req, socket, head, opti
   proxy.proxyWebSocketRequest(req, socket, head, options.buffer);
 };
 
+//
+// ### function addHost (host, target)
+// #### @host {String} Host to add to proxyTable
+// #### @target {String} Target to add to proxyTable
+// Adds a host to proxyTable
+//
+RoutingProxy.prototype.addHost = function (host, target) {
+  if (this.proxyTable) {
+    this.proxyTable.addRoute(host, target);
+  }
+};
+
+//
+// ### function removeHost (host)
+// #### @host {String} Host to remove from proxyTable
+// Removes a host to proxyTable
+//
+RoutingProxy.prototype.removeHost = function (host) {
+  if (this.proxyTable) {
+    this.proxyTable.removeRoute(host);
+  }
+};
+
 //
 // ### @private function _getKey (options)
 // #### @options {Object} Options to extract the key from
diff --git a/test/http/routing-table-test.js b/test/http/routing-table-test.js
index 679c286..f3dcf31 100644
--- a/test/http/routing-table-test.js
+++ b/test/http/routing-table-test.js
@@ -12,7 +12,7 @@ var assert = require('assert'),
     request = require('request'),
     vows = require('vows'),
     macros = require('../macros'),
-    helpers = require('../helpers/index');
+    helpers = require('../helpers');
 
 var routeFile = path.join(__dirname, 'config.json');
 
@@ -25,6 +25,16 @@ vows.describe(helpers.describe('routing-table')).addBatch({
         "latency.com": "127.0.0.1:{PORT}"
       }
     }),
+    "addHost() / removeHost()": macros.http.assertDynamicProxy({
+      hostnameOnly: true,
+      routes: {
+        "static.com":  "127.0.0.1:{PORT}",
+        "removed.com": "127.0.0.1:{PORT}"
+      }
+    }, {
+      add: [{ host: 'dynamic1.com', target: '127.0.0.1:' }],
+      drop: ['removed.com']
+    }),
     "using RegExp": macros.http.assertProxiedToRoutes({
       routes: {
         "foo.com": "127.0.0.1:{PORT}",
diff --git a/test/macros/http.js b/test/macros/http.js
index 108fa98..9f78f82 100644
--- a/test/macros/http.js
+++ b/test/macros/http.js
@@ -243,7 +243,7 @@ exports.assertProxiedToRoutes = function (options, nested) {
   // Parse locations from routes for making assertion requests.
   //
   var locations = helpers.http.parseRoutes(options),
-      port = helpers.nextPort,
+      port = options.pport || helpers.nextPort,
       protocol = helpers.protocols.proxy,
       context,
       proxy;
@@ -365,3 +365,83 @@ exports.assertProxiedToRoutes = function (options, nested) {
 
   return context;
 };
+
+//
+// ### function assertDynamicProxy (static, dynamic)
+// Asserts that after the `static` routes have been tested
+// and the `dynamic` routes are added / removed the appropriate
+// proxy responses are received.
+//
+exports.assertDynamicProxy = function (static, dynamic) {
+  var proxyPort = helpers.nextPort,
+      protocol = helpers.protocols.proxy,
+      context;
+
+  if (dynamic.add) {
+    dynamic.add = dynamic.add.map(function (dyn) {
+      dyn.port   = helpers.nextPort;
+      dyn.target = dyn.target + dyn.port;
+      return dyn;
+    });
+  }
+
+  context = {
+    topic: function () {
+      var that = this;
+
+      setTimeout(function () {
+        if (dynamic.drop) {
+          dynamic.drop.forEach(function (dropHost) {
+            that.proxyServer.proxy.removeHost(dropHost);
+          });
+        }
+
+        if (dynamic.add) {
+          async.forEachSeries(dynamic.add, function addOne (dyn, next) {
+            that.proxyServer.proxy.addHost(dyn.host, dyn.target);
+            helpers.http.createServer({
+              port: dyn.port,
+              output: 'hello ' + dyn.host
+            }, next);
+          }, that.callback);
+        }
+        else {
+          that.callback();
+        }
+      }, 200);
+    }
+  };
+
+  if (dynamic.drop) {
+    dynamic.drop.forEach(function (dropHost) {
+      context[dropHost] = exports.assertRequest({
+        assert: { statusCode: 404 },
+        request: {
+          uri: protocol + '://127.0.0.1:' + proxyPort,
+          headers: {
+            host: dropHost
+          }
+        }
+      });
+    });
+  }
+
+  if (dynamic.add) {
+    dynamic.add.forEach(function (dyn) {
+      context[dyn.host] = exports.assertRequest({
+        assert: { body: 'hello ' + dyn.host },
+        request: {
+          uri: protocol + '://127.0.0.1:' + proxyPort,
+          headers: {
+            host: dyn.host
+          }
+        }
+      });
+    });
+  }
+
+  static.pport = proxyPort;
+  return exports.assertProxiedToRoutes(static, {
+    "once the server has started": context
+  });
+};
\ No newline at end of file