diff --git a/lib/ajax-browser.js b/lib/ajax-browser.js
deleted file mode 100644
index d345ee5..0000000
--- a/lib/ajax-browser.js
+++ /dev/null
@@ -1,238 +0,0 @@
-// taken from pouchdb
-"use strict";
-
-var createBlob = require('./blob.js');
-var errors = require('./errors');
-var utils = require("./utils");
-var hasUpload;
-
-function ajax(options, adapterCallback) {
-
-  var requestCompleted = false;
-  var callback = utils.getArguments(function (args) {
-    if (requestCompleted) {
-      return;
-    }
-    adapterCallback.apply(this, args);
-    requestCompleted = true;
-  });
-
-  if (typeof options === "function") {
-    callback = options;
-    options = {};
-  }
-
-  options = utils.clone(options);
-
-  var defaultOptions = {
-    method : "GET",
-    headers: {},
-    json: true,
-    processData: true,
-    timeout: 10000,
-    cache: false
-  };
-
-  options = utils.extend(true, defaultOptions, options);
-
-  // cache-buster, specifically designed to work around IE's aggressive caching
-  // see http://www.dashbay.com/2011/05/internet-explorer-caches-ajax/
-  if (options.method === 'GET' && !options.cache) {
-    var hasArgs = options.url.indexOf('?') !== -1;
-    options.url += (hasArgs ? '&' : '?') + '_nonce=' + utils.uuid(16);
-  }
-
-  function onSuccess(obj, resp, cb) {
-    if (!options.binary && !options.json && options.processData &&
-      typeof obj !== 'string') {
-      obj = JSON.stringify(obj);
-    } else if (!options.binary && options.json && typeof obj === 'string') {
-      try {
-        obj = JSON.parse(obj);
-      } catch (e) {
-        // Probably a malformed JSON from server
-        return cb(e);
-      }
-    }
-    if (Array.isArray(obj)) {
-      obj = obj.map(function (v) {
-        var obj;
-        if (v.ok) {
-          return v;
-        } else if (v.error && v.error === 'conflict') {
-          obj = errors.REV_CONFLICT;
-          obj.id = v.id;
-          return obj;
-        } else if (v.error && v.error === 'forbidden') {
-          obj = errors.FORBIDDEN;
-          obj.id = v.id;
-          obj.reason = v.reason;
-          return obj;
-        } else if (v.missing) {
-          obj = errors.MISSING_DOC;
-          obj.missing = v.missing;
-          return obj;
-        } else {
-          return v;
-        }
-      });
-    }
-    cb(null, obj, resp);
-  }
-
-  function onError(err, cb) {
-    var errParsed, errObj, errType, key;
-    try {
-      errParsed = JSON.parse(err.responseText);
-      //would prefer not to have a try/catch clause
-      for (key in errors) {
-        if (errors.hasOwnProperty(key) &&
-            errors[key].name === errParsed.error) {
-          errType = errors[key];
-          break;
-        }
-      }
-      if (!errType) {
-        errType = errors.UNKNOWN_ERROR;
-        if (err.status) {
-          errType.status = err.status;
-        }
-        if (err.statusText) {
-          err.name = err.statusText;
-        }
-      }
-      errObj = errors.error(errType, errParsed.reason);
-    } catch (e) {
-      for (var key in errors) {
-        if (errors.hasOwnProperty(key) && errors[key].status === err.status) {
-          errType = errors[key];
-          break;
-        }
-      }
-      if (!errType) {
-        errType = errors.UNKNOWN_ERROR;
-        if (err.status) {
-          errType.status = err.status;
-        }
-        if (err.statusText) {
-          err.name = err.statusText;
-        }
-      }
-      errObj = errors.error(errType);
-    }
-    cb(errObj);
-  }
-
-  var timer;
-  var xhr;
-  if (options.xhr) {
-    xhr = new options.xhr();
-  } else {
-    xhr = new XMLHttpRequest();
-  }
-  xhr.open(options.method, options.url);
-  xhr.withCredentials = true;
-
-  if (options.json) {
-    options.headers.Accept = 'application/json';
-    options.headers['Content-Type'] = options.headers['Content-Type'] ||
-      'application/json';
-    if (options.body &&
-        options.processData &&
-        typeof options.body !== "string") {
-      options.body = JSON.stringify(options.body);
-    }
-  }
-
-  if (options.binary) {
-    xhr.responseType = 'arraybuffer';
-  }
-
-  var createCookie = function (name, value, days) {
-    var expires = "";
-    if (days) {
-      var date = new Date();
-      date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
-      expires = "; expires=" + date.toGMTString();
-    }
-    document.cookie = name + "=" + value + expires + "; path=/";
-  };
-
-  for (var key in options.headers) {
-    if (key === 'Cookie') {
-      var cookie = options.headers[key].split('=');
-      createCookie(cookie[0], cookie[1], 10);
-    } else {
-      xhr.setRequestHeader(key, options.headers[key]);
-    }
-  }
-
-  if (!("body" in options)) {
-    options.body = null;
-  }
-
-  var abortReq = function () {
-    if (requestCompleted) {
-      return;
-    }
-    xhr.abort();
-    onError(xhr, callback);
-  };
-
-  xhr.onreadystatechange = function () {
-    if (xhr.readyState !== 4 || requestCompleted) {
-      return;
-    }
-    clearTimeout(timer);
-    if (xhr.status >= 200 && xhr.status < 300) {
-      var data;
-      if (options.binary) {
-        data = createBlob([xhr.response || ''], {
-          type: xhr.getResponseHeader('Content-Type')
-        });
-      } else {
-        data = xhr.responseText;
-      }
-      onSuccess(data, xhr, callback);
-    } else {
-      onError(xhr, callback);
-    }
-  };
-
-  if (options.timeout > 0) {
-    timer = setTimeout(abortReq, options.timeout);
-    xhr.onprogress = function () {
-      clearTimeout(timer);
-      timer = setTimeout(abortReq, options.timeout);
-    };
-    if (typeof hasUpload === 'undefined') {
-      // IE throws an error if you try to access it directly
-      hasUpload = Object.keys(xhr).indexOf('upload') !== -1;
-    }
-    if (hasUpload) { // does not exist in ie9
-      xhr.upload.onprogress = xhr.onprogress;
-    }
-  }
-  if (options.body && (options.body instanceof Blob)) {
-    var reader = new FileReader();
-    reader.onloadend = function (e) {
-
-      var binary = "";
-      var bytes = new Uint8Array(this.result);
-      var length = bytes.byteLength;
-
-      for (var i = 0; i < length; i++) {
-        binary += String.fromCharCode(bytes[i]);
-      }
-
-      binary = utils.fixBinary(binary);
-      xhr.send(binary);
-    };
-    reader.readAsArrayBuffer(options.body);
-  } else {
-    xhr.send(options.body);
-  }
-  return {abort: abortReq};
-}
-
-module.exports = ajax;
diff --git a/lib/ajax.js b/lib/ajax.js
deleted file mode 100644
index 0f6e62f..0000000
--- a/lib/ajax.js
+++ /dev/null
@@ -1,183 +0,0 @@
-"use strict";
-
-var request = require('request');
-var errors = require('./errors');
-var utils = require("./utils");
-
-/* istanbul ignore next */
-function ajax(options, adapterCallback) {
-
-  var requestCompleted = false;
-  var callback = utils.getArguments(function (args) {
-    if (requestCompleted) {
-      return;
-    }
-    adapterCallback.apply(this, args);
-    requestCompleted = true;
-  });
-
-  if (typeof options === "function") {
-    callback = options;
-    options = {};
-  }
-
-  options = utils.clone(options);
-
-  var defaultOptions = {
-    method : "GET",
-    headers: {},
-    json: true,
-    processData: true,
-    timeout: 10000,
-    cache: false
-  };
-
-  options = utils.extend(true, defaultOptions, options);
-
-
-  function onSuccess(obj, resp, cb) {
-    if (!options.binary && !options.json && options.processData &&
-      typeof obj !== 'string') {
-      obj = JSON.stringify(obj);
-    } else if (!options.binary && options.json && typeof obj === 'string') {
-      try {
-        obj = JSON.parse(obj);
-      } catch (e) {
-        // Probably a malformed JSON from server
-        return cb(e);
-      }
-    }
-    if (Array.isArray(obj)) {
-      obj = obj.map(function (v) {
-        var obj;
-        if (v.ok) {
-          return v;
-        } else if (v.error && v.error === 'conflict') {
-          obj = errors.REV_CONFLICT;
-          obj.id = v.id;
-          return obj;
-        } else if (v.error && v.error === 'forbidden') {
-          obj = errors.FORBIDDEN;
-          obj.id = v.id;
-          obj.reason = v.reason;
-          return obj;
-        } else if (v.missing) {
-          obj = errors.MISSING_DOC;
-          obj.missing = v.missing;
-          return obj;
-        } else {
-          return v;
-        }
-      });
-    }
-    cb(null, obj, resp);
-  }
-
-  function onError(err, cb) {
-    var errParsed, errObj, errType, key;
-    if (err.code && err.status) {
-      var err2 = new Error(err.message || err.code);
-      err2.status = err.status;
-      return cb(err2);
-    }
-    try {
-      errParsed = JSON.parse(err.responseText);
-      //would prefer not to have a try/catch clause
-      for (key in errors) {
-        if (errors.hasOwnProperty(key) &&
-            errors[key].name === errParsed.error) {
-          errType = errors[key];
-          break;
-        }
-      }
-      if (!errType) {
-        errType = errors.UNKNOWN_ERROR;
-        if (err.status) {
-          errType.status = err.status;
-        }
-        if (err.statusText) {
-          err.name = err.statusText;
-        }
-      }
-      errObj = errors.error(errType, errParsed.reason);
-    } catch (e) {
-      for (var key in errors) {
-        if (errors.hasOwnProperty(key) && errors[key].status === err.status) {
-          errType = errors[key];
-          break;
-        }
-      }
-      if (!errType) {
-        errType = errors.UNKNOWN_ERROR;
-        if (err.status) {
-          errType.status = err.status;
-        }
-        if (err.statusText) {
-          err.name = err.statusText;
-        }
-      }
-      errObj = errors.error(errType);
-    }
-    cb(errObj);
-  }
-
-
-  if (options.json) {
-    if (!options.binary) {
-      options.headers.Accept = 'application/json';
-    }
-    options.headers['Content-Type'] = options.headers['Content-Type'] ||
-      'application/json';
-  }
-
-  if (options.binary) {
-    options.encoding = null;
-    options.json = false;
-  }
-
-  if (!options.processData) {
-    options.json = false;
-  }
-
-  return request(options, function (err, response, body) {
-    if (err) {
-      err.status = response ? response.statusCode : 400;
-      return onError(err, callback);
-    }
-    var error;
-    var content_type = response.headers['content-type'];
-    var data = (body || new Buffer(''));
-
-    // CouchDB doesn't always return the right content-type for JSON data, so
-    // we check for ^{ and }$ (ignoring leading/trailing whitespace)
-    if (!options.binary && (options.json || !options.processData) &&
-        typeof data !== 'object' &&
-        (/json/.test(content_type) ||
-         (/^[\s]*\{/.test(data) && /\}[\s]*$/.test(data)))) {
-      data = JSON.parse(data);
-    }
-
-    if (response.statusCode >= 200 && response.statusCode < 300) {
-      onSuccess(data, response, callback);
-    }
-    else {
-      if (options.binary) {
-        data = JSON.parse(data.toString());
-      }
-      if (data.reason === 'missing') {
-        error = errors.MISSING_DOC;
-      } else if (data.reason === 'no_db_file') {
-        error = errors.error(errors.DB_MISSING, data.reason);
-      } else if (data.error === 'conflict') {
-        error = errors.REV_CONFLICT;
-      } else {
-        error = errors.error(errors.UNKNOWN_ERROR, data.reason, data.error);
-      }
-      error.status = response.statusCode;
-      callback(error);
-    }
-  });
-}
-
-/* istanbul ignore next */
-module.exports = ajax;
diff --git a/lib/blob.js b/lib/blob.js
deleted file mode 100644
index e963c57..0000000
--- a/lib/blob.js
+++ /dev/null
@@ -1,28 +0,0 @@
-"use strict";
-
-//Abstracts constructing a Blob object, so it also works in older
-//browsers that don't support the native Blob constructor. (i.e.
-//old QtWebKit versions, at least).
-function createBlob(parts, properties) {
-  parts = parts || [];
-  properties = properties || {};
-  try {
-    return new Blob(parts, properties);
-  } catch (e) {
-    if (e.name !== "TypeError") {
-      throw e;
-    }
-    var BlobBuilder = global.BlobBuilder ||
-                      global.MSBlobBuilder ||
-                      global.MozBlobBuilder ||
-                      global.WebKitBlobBuilder;
-    var builder = new BlobBuilder();
-    for (var i = 0; i < parts.length; i += 1) {
-      builder.append(parts[i]);
-    }
-    return builder.getBlob(properties.type);
-  }
-}
-
-module.exports = createBlob;
-
diff --git a/lib/errors.js b/lib/errors.js
deleted file mode 100644
index 3453c7e..0000000
--- a/lib/errors.js
+++ /dev/null
@@ -1,130 +0,0 @@
-"use strict";
-
-function PouchError(opts) {
-  this.status = opts.status;
-  this.name = opts.error;
-  this.message = opts.reason;
-  this.error = true;
-}
-
-PouchError.prototype__proto__ = Error.prototype;
-/* istanbul ignore next */
-PouchError.prototype.toString = function () {
-  return JSON.stringify({
-    status: this.status,
-    name: this.name,
-    message: this.message
-  });
-};
-
-exports.UNAUTHORIZED = new PouchError({
-  status: 401,
-  error: 'unauthorized',
-  reason: "Name or password is incorrect."
-});
-exports.MISSING_BULK_DOCS = new PouchError({
-  status: 400,
-  error: 'bad_request',
-  reason: "Missing JSON list of 'docs'"
-});
-exports.MISSING_DOC = new PouchError({
-  status: 404,
-  error: 'not_found',
-  reason: 'missing'
-});
-exports.REV_CONFLICT = new PouchError({
-  status: 409,
-  error: 'conflict',
-  reason: 'Document update conflict'
-});
-exports.INVALID_ID = new PouchError({
-  status: 400,
-  error: 'invalid_id',
-  reason: '_id field must contain a string'
-});
-exports.MISSING_ID = new PouchError({
-  status: 412,
-  error: 'missing_id',
-  reason: '_id is required for puts'
-});
-exports.RESERVED_ID = new PouchError({
-  status: 400,
-  error: 'bad_request',
-  reason: 'Only reserved document ids may start with underscore.'
-});
-exports.NOT_OPEN = new PouchError({
-  status: 412,
-  error: 'precondition_failed',
-  reason: 'Database not open'
-});
-exports.UNKNOWN_ERROR = new PouchError({
-  status: 500,
-  error: 'unknown_error',
-  reason: 'Database encountered an unknown error'
-});
-exports.BAD_ARG = new PouchError({
-  status: 500,
-  error: 'badarg',
-  reason: 'Some query argument is invalid'
-});
-exports.INVALID_REQUEST = new PouchError({
-  status: 400,
-  error: 'invalid_request',
-  reason: 'Request was invalid'
-});
-exports.QUERY_PARSE_ERROR = new PouchError({
-  status: 400,
-  error: 'query_parse_error',
-  reason: 'Some query parameter is invalid'
-});
-exports.DOC_VALIDATION = new PouchError({
-  status: 500,
-  error: 'doc_validation',
-  reason: 'Bad special document member'
-});
-exports.BAD_REQUEST = new PouchError({
-  status: 400,
-  error: 'bad_request',
-  reason: 'Something wrong with the request'
-});
-exports.NOT_AN_OBJECT = new PouchError({
-  status: 400,
-  error: 'bad_request',
-  reason: 'Document must be a JSON object'
-});
-exports.DB_MISSING = new PouchError({
-  status: 404,
-  error: 'not_found',
-  reason: 'Database not found'
-});
-exports.IDB_ERROR = new PouchError({
-  status: 500,
-  error: 'indexed_db_went_bad',
-  reason: 'unknown'
-});
-exports.WSQ_ERROR = new PouchError({
-  status: 500,
-  error: 'web_sql_went_bad',
-  reason: 'unknown'
-});
-exports.LDB_ERROR = new PouchError({
-  status: 500,
-  error: 'levelDB_went_went_bad',
-  reason: 'unknown'
-});
-exports.FORBIDDEN = new PouchError({
-  status: 403,
-  error: 'forbidden',
-  reason: 'Forbidden by design doc validate_doc_update function'
-});
-/* istanbul ignore next */
-exports.error = function (error, reason, name) {
-  function CustomPouchError(msg) {
-    this.message = reason;
-    if (name) {
-      this.name = name;
-    }
-  }
-  CustomPouchError.prototype = error;
-  return new CustomPouchError(reason);
-};
diff --git a/lib/index.js b/lib/index.js
index 58e7b3e..2598712 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,7 +1,7 @@
 'use strict';
 
 var utils = require('./utils');
-var ajax = require('./ajax');
+var ajax = require('pouchdb-ajax');
 var Checkpointer = require('./checkpointer');
 
 exports.load = utils.toPromise(function (url, opts, callback) {
diff --git a/lib/utils.js b/lib/utils.js
index 22864de..330e2bb 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -8,10 +8,9 @@ if (typeof window !== 'undefined' && window.PouchDB) {
   Promise = typeof global.Promise === 'function' ? global.Promise : require('lie');
 }
 exports.uuid = require('./uuid');
+
 exports.extend = require('pouchdb-extend');
-exports.clone = function (obj) {
-  return exports.extend(true, {}, obj);
-};
+
 /* istanbul ignore next */
 exports.once = function (fun) {
   var called = false;
@@ -25,18 +24,8 @@ exports.once = function (fun) {
     }
   });
 };
-/* istanbul ignore next */
-exports.getArguments = function (fun) {
-  return function () {
-    var len = arguments.length;
-    var args = new Array(len);
-    var i = -1;
-    while (++i < len) {
-      args[i] = arguments[i];
-    }
-    return fun.call(this, args);
-  };
-};
+exports.getArguments = require('argsarray');
+
 /* istanbul ignore next */
 exports.toPromise = function (func) {
   //create the function we will be returning
diff --git a/package.json b/package.json
index 4db29b3..ab0d839 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "es3ify": "^0.1.3",
     "inherits": "~2.0.1",
     "lie": "^2.6.0",
+    "pouchdb-ajax": "^1.0.0",
     "pouchdb-extend": "^0.1.2",
     "request": "^2.47.0",
     "spark-md5": "0.0.5"
@@ -51,7 +52,6 @@
     "mocha": "~1.18",
     "phantomjs": "^1.9.7-5",
     "pouchdb": "pouchdb/pouchdb",
-    "request": "^2.36.0",
     "sauce-connect-launcher": "^0.4.2",
     "uglify-js": "^2.4.13",
     "watchify": "~0.4.1",