diff --git a/lib/async-tasks.js b/lib/async-tasks.js
index 198639b0c..208ebe729 100644
--- a/lib/async-tasks.js
+++ b/lib/async-tasks.js
@@ -29,6 +29,10 @@ module.exports = [
         step: "Merging middlewares from core + plugins",
         fn: async.mergeMiddlewares
     },
+    {
+        step: "Setting the rewrite rules middleware for snippet",
+        fn: async.setRewriteRules
+    },
     {
         step: "Starting the Server",
         fn: async.startServer
diff --git a/lib/async.js b/lib/async.js
index 6406b194d..c70cc31bc 100644
--- a/lib/async.js
+++ b/lib/async.js
@@ -138,6 +138,18 @@ module.exports = {
             }
         });
     },
+    setRewriteRules: function (bs, done) {
+        var snippetUtils = require("./snippet").utils;
+        done(null, {
+            instance: {
+                snippetMw: snippetUtils.getSnippetMiddleware(
+                    bs.options.get("snippet"),
+                    bs.options.get("snippetOptions"),
+                    bs.options.get("rewriteRules")
+                )
+            }
+        });
+    },
     /**
      * @param {BrowserSync} bs
      * @param {Function} done
diff --git a/lib/browser-sync.js b/lib/browser-sync.js
index 20819c095..941fcc248 100644
--- a/lib/browser-sync.js
+++ b/lib/browser-sync.js
@@ -575,6 +575,45 @@ BrowserSync.prototype.setMany = function (fn, opts) {
     return this.options;
 };
 
+/**
+ * Remove a rewrite rule by id
+ */
+BrowserSync.prototype.removeRewriteRule = function (id) {
+    var bs = this;
+    var mode = bs.options.get("mode");
+
+    if (mode === "server") {
+        bs.snippetMw.opts.rules = bs.snippetMw.opts.rules.filter(fn);
+    }
+
+    if (mode === "proxy") {
+        bs.proxy.config.rules = bs.proxy.config.rules.filter(fn);
+    }
+
+    function fn (item) {
+        if (item.id) {
+            return item.id !== id;
+        }
+        return true;
+    }
+};
+
+/**
+ * Add a new rewrite rule to the stack
+ * @param {Object} rule
+ */
+BrowserSync.prototype.addRewriteRule = function (rule) {
+    var bs = this;
+
+    if (bs.options.get("mode") === "server") {
+        bs.snippetMw.opts.rules.push(rule);
+    }
+
+    if (bs.options.get("mode") === "proxy") {
+        bs.proxy.config.rules.push(rule);
+    }
+};
+
 /**
  * Handle Browser Reloads
  */
diff --git a/lib/server/proxy-server.js b/lib/server/proxy-server.js
index 2e76d7fc1..eacefef3c 100644
--- a/lib/server/proxy-server.js
+++ b/lib/server/proxy-server.js
@@ -3,6 +3,7 @@
 var snippetUtils = require("./../snippet").utils;
 var _            = require("lodash");
 var utils        = require("./utils");
+var Immutable    = require("immutable");
 
 /**
  * @param {BrowserSync} bs
@@ -21,9 +22,9 @@ module.exports = function createProxyServer (bs, scripts) {
 
     var opts = getOptions(bs, scripts);
 
-    var app = require("foxy")(options.getIn(["proxy", "target"]), opts);
+    bs.proxy = require("foxy").create(options.getIn(["proxy", "target"]), opts);
 
-    var proxy = utils.getServer(app, bs.options);
+    var proxy = utils.getServer(bs.proxy.app, bs.options);
 
     /**
      * How best to handle websockets going forward?
@@ -41,19 +42,15 @@ function getOptions (bs, scripts) {
 
     var options  = bs.options;
 
-    var snippetOptions = options.get("snippetOptions").toJS();
-    var proxyOptions  = options.getIn(["proxy", "proxyOptions"]);
-    var rewrites = [snippetUtils.getRegex(options.get("snippet"), options.get("snippetOptions"))];
-
-    if (bs.options.get("rewriteRules")) {
-        rewrites = rewrites.concat(bs.options.get("rewriteRules").toJS());
-    }
+    var proxyOptions   = options.getIn(["proxy", "proxyOptions"]);
+    var rules          = bs.snippetMw;
+    var cookies        = options.getIn(["proxy", "cookies"]);
 
     var out = {
-        rules:       rewrites,
-        whitelist:   snippetOptions.whitelist,
-        blacklist:   snippetOptions.blacklist,
-        middleware:  options.get("middleware").push(getPluginMiddleware(bs, scripts)),
+        rules:       rules.opts.rules,
+        whitelist:   rules.opts.whitelist,
+        blacklist:   rules.opts.blacklist,
+        middleware:  options.get("middleware").toJS().concat(getPluginMiddleware(bs, scripts)),
         errHandler:  function (err) {
             bs.logger.debug("{red:[proxy error]} %s", err.message);
         }
@@ -67,8 +64,10 @@ function getOptions (bs, scripts) {
         out.reqHeaders = options.getIn(["proxy", "reqHeaders"]);
     }
 
-    if (options.getIn(["proxy", "cookies"])) {
-        out.cookies = options.getIn(["proxy", "cookies"]);
+    if (!_.isUndefined(cookies)) {
+        if (Immutable.Map.isMap(cookies)) {
+            out.cookies = cookies.toJS();
+        }
     }
 
     return out;
diff --git a/lib/server/static-server.js b/lib/server/static-server.js
index 3bf2de691..06e1174b3 100644
--- a/lib/server/static-server.js
+++ b/lib/server/static-server.js
@@ -2,7 +2,6 @@
 
 var connect      = require("connect");
 var utils        = require("./utils.js");
-var snippetUtils = require("./../snippet").utils;
 
 /**
  * @param {BrowserSync} bs
@@ -39,14 +38,9 @@ module.exports = function createServer (bs, scripts) {
 
     /**
      * Add snippet injection middleware
+     * This also includes any additional middleware given from the user
      */
-    app.use(
-        snippetUtils.getSnippetMiddleware(
-            options.get("snippet"),
-            options.get("snippetOptions"),
-            options.get("rewriteRules")
-        )
-    );
+    app.use(bs.snippetMw.middleware);
 
     /**
      * Add user-provided middlewares
diff --git a/lib/snippet.js b/lib/snippet.js
index 740c0ddc9..48fa0d30e 100644
--- a/lib/snippet.js
+++ b/lib/snippet.js
@@ -47,15 +47,21 @@ var utils = {
         };
     },
     getSnippetMiddleware: function (snippet, options, rewriteRules) {
+        return lrSnippet.create(utils.getRules(snippet, options, rewriteRules));
+    },
+    getRules: function (snippet, options, rewriteRules) {
+
         var rules = [utils.getRegex(snippet, options)];
+
         if (rewriteRules) {
             rules = rules.concat(rewriteRules.toJS());
         }
-        return lrSnippet({
+
+        return {
             rules: rules,
             blacklist: options.get("blacklist").toJS(),
             whitelist: options.get("whitelist").toJS()
-        });
+        };
     },
     /**
      * @param {String} scripts - the client side JS
diff --git a/package.json b/package.json
index 464177f8b..a311cef46 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "easy-extender": "^2.3.1",
     "eazy-logger": "^2.1.2",
     "emitter-steward": "^0.0.1",
-    "foxy": "^10.1.2",
+    "foxy": "^11.0.0",
     "immutable": "^3.6.4",
     "localtunnel": "^1.3.0",
     "lodash": "^3.8.0",
@@ -50,7 +50,7 @@
     "pad-left": "^1.0.2",
     "portscanner": "^1.0.0",
     "query-string": "^2.0.0",
-    "resp-modifier": "^2.1.0",
+    "resp-modifier": "^3.1.2",
     "serve-index": "^1.6.3",
     "serve-static": "^1.9.1",
     "socket.io": "^1.3.5",
diff --git a/test/specs/e2e/proxy/e2e.proxy.cookies.js b/test/specs/e2e/proxy/e2e.proxy.cookies.js
index a7888f298..20a62d57c 100644
--- a/test/specs/e2e/proxy/e2e.proxy.cookies.js
+++ b/test/specs/e2e/proxy/e2e.proxy.cookies.js
@@ -33,7 +33,7 @@ describe("E2E proxy test with custom cookies options passed to foxy", function (
             logLevel: "silent"
         };
 
-        spy = require("sinon").spy(require.cache[foxyPath], "exports");
+        spy = require("sinon").spy(require.cache[foxyPath].exports, "create");
         bs = browserSync.init(config, done).instance;
     });
 
@@ -44,7 +44,7 @@ describe("E2E proxy test with custom cookies options passed to foxy", function (
 
     it("sets cookie stripDomain: false", function (done) {
 
-        assert.isFalse(spy.getCall(0).args[1].cookies.toJS().stripDomain); // check fn passed to foxy
+        assert.isFalse(spy.getCall(0).args[1].cookies.stripDomain); // check fn passed to foxy
 
         spy.restore();
 
diff --git a/test/specs/e2e/proxy/e2e.proxy.proxy.options.js b/test/specs/e2e/proxy/e2e.proxy.proxy.options.js
index 79c32de7e..080eabc8d 100644
--- a/test/specs/e2e/proxy/e2e.proxy.proxy.options.js
+++ b/test/specs/e2e/proxy/e2e.proxy.proxy.options.js
@@ -33,7 +33,7 @@ describe("E2E proxy test with `proxyOptions`", function () {
             logLevel: "silent"
         };
 
-        spy = require("sinon").spy(require.cache[foxyPath], "exports");
+        spy = require("sinon").spy(require.cache[foxyPath].exports, "create");
         bs = browserSync.init(config, done).instance;
     });
 
diff --git a/test/specs/e2e/proxy/e2e.proxy.req.headers.js b/test/specs/e2e/proxy/e2e.proxy.req.headers.js
index 11cfd0153..607617b22 100644
--- a/test/specs/e2e/proxy/e2e.proxy.req.headers.js
+++ b/test/specs/e2e/proxy/e2e.proxy.req.headers.js
@@ -35,7 +35,7 @@ describe("E2E proxy test with custom req headers", function () {
             logLevel: "silent"
         };
 
-        spy = require("sinon").spy(require.cache[foxyPath], "exports");
+        spy = require("sinon").spy(require.cache[foxyPath].exports, "create");
         bs = browserSync.init(config, done).instance;
     });
 
diff --git a/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.add.js b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.add.js
new file mode 100644
index 000000000..3c9f437a5
--- /dev/null
+++ b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.add.js
@@ -0,0 +1,74 @@
+"use strict";
+
+var browserSync = require("../../../../index");
+
+var connect = require("connect");
+var serveStatic = require("serve-static");
+var request = require("supertest");
+var assert = require("chai").assert;
+
+describe("E2E proxy test with adding rewrite rules dynamically", function () {
+
+    var bs, server, options;
+
+    before(function (done) {
+
+        browserSync.reset();
+
+        var app = connect();
+        app.use(serveStatic("test/fixtures"));
+        server = app.listen();
+        var proxytarget = "http://localhost:" + server.address().port;
+
+        var config = {
+            proxy:     proxytarget,
+            logLevel: "silent",
+            open:      false,
+            rewriteRules: [
+                {
+                    match: /BrowserSync/g,
+                    fn: function () {
+                        return "BROWSERSYNC";
+                    }
+                }
+            ]
+        };
+
+        bs = browserSync.init([], config, function (err, bs) {
+            options = bs.options;
+            done();
+        }).instance;
+    });
+
+    after(function () {
+        bs.cleanup();
+        server.close();
+    });
+
+    it("can add rules on the fly", function (done) {
+
+        request(bs.server)
+            .get("/index.html")
+            .set("accept", "text/html")
+            .expect(200)
+            .end(function (err, res) {
+
+                assert.include(res.text, "BROWSERSYNC");
+
+                bs.addRewriteRule({
+                    match: "BROWSERSYNC",
+                    replace: "browsersync"
+                }, {id: "myrule"});
+
+                request(bs.server)
+                    .get("/index.html")
+                    .set("accept", "text/html")
+                    .expect(200)
+                    .end(function (err, res) {
+                        assert.include(res.text, "browsersync");
+                        assert.notInclude(res.text, "BROWSERSYNC");
+                        done();
+                    });
+            });
+    });
+});
diff --git a/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.js b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.js
index 2e4ef10f5..e6c2f24f2 100644
--- a/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.js
+++ b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.js
@@ -9,14 +9,14 @@ var assert = require("chai").assert;
 
 describe("E2E proxy test with rewrite rules", function () {
 
-    var instance, server, options;
+    var bs, server, options;
 
     before(function (done) {
 
         browserSync.reset();
 
         var app = connect();
-        app.use(serveStatic("./test/fixtures"));
+        app.use(serveStatic("test/fixtures"));
         server = app.listen();
         var proxytarget = "http://localhost:" + server.address().port;
 
@@ -26,33 +26,32 @@ describe("E2E proxy test with rewrite rules", function () {
             open:      false,
             rewriteRules: [
                 {
-                    match: /Forms/g,
+                    match: /BrowserSync/g,
                     fn: function () {
-                        return "Shane's forms";
+                        return "BROWSERSYNC";
                     }
                 }
             ]
         };
 
-        instance = browserSync.init([], config, function (err, bs) {
+        bs = browserSync.init([], config, function (err, bs) {
             options = bs.options;
             done();
         }).instance;
     });
 
     after(function () {
-        instance.cleanup();
+        bs.cleanup();
         server.close();
     });
 
-    it("serves files with HTML rewritten", function (done) {
-
-        request(instance.server)
+    it("can add rules on the fly", function (done) {
+        request(bs.server)
             .get("/index.html")
             .set("accept", "text/html")
             .expect(200)
             .end(function (err, res) {
-                assert.include(res.text, "Shane's forms");
+                assert.include(res.text, "BROWSERSYNC");
                 done();
             });
     });
diff --git a/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.remove.js b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.remove.js
new file mode 100644
index 000000000..16ab206c7
--- /dev/null
+++ b/test/specs/e2e/proxy/e2e.proxy.rewrite.rules.remove.js
@@ -0,0 +1,70 @@
+"use strict";
+
+var browserSync = require("../../../../index");
+
+var connect = require("connect");
+var serveStatic = require("serve-static");
+var request = require("supertest");
+var assert = require("chai").assert;
+
+describe("E2E proxy test with adding and removing rewrite rules dynamically", function () {
+
+    var bs, server, options;
+
+    before(function (done) {
+
+        browserSync.reset();
+
+        var app = connect();
+        app.use(serveStatic("test/fixtures"));
+        server = app.listen();
+        var proxytarget = "http://localhost:" + server.address().port;
+
+        var config = {
+            proxy:     proxytarget,
+            logLevel: "silent",
+            open:      false,
+            online: false
+        };
+
+        bs = browserSync.init([], config, function (err, bs) {
+            options = bs.options;
+            done();
+        }).instance;
+    });
+
+    after(function () {
+        bs.cleanup();
+        server.close();
+    });
+
+    it("can add rules on the fly", function (done) {
+
+        bs.addRewriteRule({
+            match: "BrowserSync",
+            replace: "BROWSERSYNC",
+            id: "myrule"
+        });
+
+        request(bs.server)
+            .get("/index.html")
+            .set("accept", "text/html")
+            .expect(200)
+            .end(function (err, res) {
+
+                assert.include(res.text, "BROWSERSYNC");
+
+                bs.removeRewriteRule("myrule");
+
+                request(bs.server)
+                    .get("/index.html")
+                    .set("accept", "text/html")
+                    .expect(200)
+                    .end(function (err, res) {
+                        assert.include(res.text, "BrowserSync");
+                        assert.notInclude(res.text, "BROWSERSYNC");
+                        done();
+                    });
+            });
+    });
+});
diff --git a/test/specs/e2e/server/e2e.server.rewrite.rules.add.js b/test/specs/e2e/server/e2e.server.rewrite.rules.add.js
new file mode 100644
index 000000000..d6f0659cf
--- /dev/null
+++ b/test/specs/e2e/server/e2e.server.rewrite.rules.add.js
@@ -0,0 +1,49 @@
+"use strict";
+
+var browserSync = require("../../../../index");
+
+var request = require("supertest");
+var assert  = require("chai").assert;
+
+describe("E2E server test with rewrite rules added on the fly", function () {
+
+    var bs;
+
+    before(function (done) {
+
+        browserSync.reset();
+
+        var config = {
+            server: {
+                baseDir: "test/fixtures"
+            },
+            logLevel: "silent",
+            open: false
+        };
+
+        bs = browserSync.init(config, done).instance;
+    });
+
+    after(function () {
+        bs.cleanup();
+    });
+
+    it("serves files with HTML rewritten", function (done) {
+
+        bs.addRewriteRule({
+            match: /Forms/g,
+            fn: function () {
+                return "Shane's forms";
+            }
+        });
+
+        request(bs.server)
+            .get("/index.html")
+            .set("accept", "text/html")
+            .expect(200)
+            .end(function (err, res) {
+                assert.include(res.text, "Shane's forms");
+                done();
+            });
+    });
+});
diff --git a/test/specs/e2e/server/e2e.server.rewrite.rules.remove.js b/test/specs/e2e/server/e2e.server.rewrite.rules.remove.js
new file mode 100644
index 000000000..0d15b7cd9
--- /dev/null
+++ b/test/specs/e2e/server/e2e.server.rewrite.rules.remove.js
@@ -0,0 +1,61 @@
+"use strict";
+
+var browserSync = require("../../../../index");
+
+var request = require("supertest");
+var assert  = require("chai").assert;
+
+describe("E2E server test with rewrite rules removed on the fly", function () {
+
+    var bs;
+
+    before(function (done) {
+
+        browserSync.reset();
+
+        var config = {
+            server: {
+                baseDir: "test/fixtures"
+            },
+            logLevel: "silent",
+            open: false
+        };
+
+        bs = browserSync.init(config, done).instance;
+    });
+
+    after(function () {
+        bs.cleanup();
+    });
+
+    it("serves files with HTML rewritten", function (done) {
+
+        bs.addRewriteRule({
+            id: "myrule",
+            match: /Forms/g,
+            fn: function () {
+                return "Shane's forms";
+            }
+        });
+
+        request(bs.server)
+            .get("/index.html")
+            .set("accept", "text/html")
+            .expect(200)
+            .end(function (err, res) {
+                assert.include(res.text, "Shane's forms");
+
+                bs.removeRewriteRule("myrule");
+
+                request(bs.server)
+                    .get("/index.html")
+                    .set("accept", "text/html")
+                    .expect(200)
+                    .end(function (err, res) {
+                        assert.notInclude(res.text, "Shane's forms");
+                        done();
+                    });
+
+            });
+    });
+});