diff --git a/coverage-report.js b/coverage-report.js
index d298272..37cc9e4 100644
--- a/coverage-report.js
+++ b/coverage-report.js
@@ -1,5 +1,3 @@
-
-require("collections/shim");
 var Q = require("q");
 var FS = require("./fs");
 
@@ -22,7 +20,8 @@ FS.listTree(".coverage_data", function (name, stat) {
             console.log("        </tr>");
             console.log("    </thead>");
             console.log("    <tbody>");
-            Object.forEach(coverage.files, function (file, path) {
+            Object.keys(coverage.files).forEach(function (path) {
+                var file = coverage.files[path];
                 path = FS.relativeFromDirectory(__dirname, path);
                 if (/^spec/.test(path))
                     return;
diff --git a/fs-mock.js b/fs-mock.js
index 56d244e..99c3638 100644
--- a/fs-mock.js
+++ b/fs-mock.js
@@ -4,7 +4,7 @@ var Boot = require("./fs-boot");
 var Common = require("./fs-common");
 var BufferStream = require("./buffer-stream");
 var Reader = require("./reader");
-var Set = require("collections/set");
+var Set = require("es6-set");
 
 module.exports = MockFs;
 
diff --git a/http-apps.js b/http-apps.js
index 313211e..25a4193 100644
--- a/http-apps.js
+++ b/http-apps.js
@@ -39,7 +39,6 @@
  * @module
  */
 
-require("collections/shim");
 var Q = require("q");
 var HTTP = require("./http");
 var FS = require("./fs");
diff --git a/http-apps/negotiate.js b/http-apps/negotiate.js
index 1e5b852..4b766f2 100644
--- a/http-apps/negotiate.js
+++ b/http-apps/negotiate.js
@@ -18,13 +18,12 @@ function negotiate(request, types, header) {
  * @returns {App}
  */
 exports.Method = function (methods, methodNotAllowed) {
-    var keys = Object.keys(methods);
     if (!methodNotAllowed)
         methodNotAllowed = Status.methodNotAllowed;
     return function (request) {
         var method = request.method;
-        if (Object.has(keys, method)) {
-            return Object.get(methods, method)(request);
+        if (Object.prototype.hasOwnProperty.call(methods, method) !== -1) {
+            return methods[method](request);
         } else {
             return methodNotAllowed(request);
         }
@@ -41,7 +40,7 @@ var Negotiator = function (requestHeader, responseHeader, respond) {
             var type = MimeParse.bestMatch(keys, accept);
             request.terms = request.terms || {};
             request.terms[responseHeader] = type;
-            if (Object.has(keys, type)) {
+            if (keys.indexOf(type) !== -1) {
                 return Q.when(types[type](request), function (response) {
                     if (
                         respond !== null &&
diff --git a/http-apps/route.js b/http-apps/route.js
index 0e7d1e6..191443c 100644
--- a/http-apps/route.js
+++ b/http-apps/route.js
@@ -85,10 +85,10 @@ exports.Branch = function (paths, notFound) {
         var path = request.pathInfo.slice(1);
         var parts = path.split("/");
         var part = decodeURIComponent(parts.shift());
-        if (Object.has(paths, part)) {
+        if (hasOwnProperty.call(paths, part)) {
             request.scriptName = request.scriptName + part + "/";
             request.pathInfo = path.slice(part.length);
-            return Object.get(paths, part)(request, response);
+            return paths[part](request, response);
         }
         return notFound(request, response);
     };
diff --git a/package.json b/package.json
index 3913735..5279459 100644
--- a/package.json
+++ b/package.json
@@ -20,11 +20,11 @@
     "url": "http://github.com/kriskowal/q-io.git"
   },
   "dependencies": {
-    "collections": "^5.1.3",
+    "es6-set": "^0.1.1",
     "mime": "^1.2.11",
     "mimeparse": "^0.1.4",
     "q": "^1.0.1",
-    "qs": "^6.4.0",
+    "qs": "^1.2.1",
     "url2": "^0.0.0"
   },
   "devDependencies": {