diff --git a/package.json b/package.json
index d562ef6d0f..6a11197696 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "death": "^1.0.0",
     "debug": "^2.2.0",
     "detect-indent": "^5.0.0",
+    "dnscache": "^1.0.1",
     "eslint-plugin-jest": "^20.0.3",
     "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-relay": "0.0.8",
diff --git a/src/util/request-manager.js b/src/util/request-manager.js
index 8b7476b670..c310c00b3a 100644
--- a/src/util/request-manager.js
+++ b/src/util/request-manager.js
@@ -1,5 +1,11 @@
 /* @flow */
 
+import fs from 'fs';
+import url from 'url';
+import dnscache from 'dnscache';
+import invariant from 'invariant';
+import RequestCaptureHar from 'request-capture-har';
+
 import type {Reporter} from '../reporters/index.js';
 import {MessageError} from '../errors.js';
 import BlockingQueue from './blocking-queue.js';
@@ -9,11 +15,14 @@ import map from '../util/map.js';
 
 import typeof * as RequestModuleT from 'request';
 
-const RequestCaptureHar = require('request-capture-har');
-const invariant = require('invariant');
-const url = require('url');
-const fs = require('fs');
-
+// Initialize DNS cache so we don't look up the same
+// domains like registry.yarnpkg.com over and over again
+// for each request.
+dnscache({
+  enable: true,
+  ttl: 300,
+  cachesize: 10,
+});
 const successHosts = map();
 const controlOffline = network.isOffline();
 
diff --git a/yarn.lock b/yarn.lock
index 6ddb14b1b5..b4311840a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -194,6 +194,10 @@ arrify@^1.0.0, arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
 
+asap@~2.0.3:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
+
 asn1.js@^4.0.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
@@ -1403,6 +1407,13 @@ diffie-hellman@^5.0.0:
     miller-rabin "^4.0.0"
     randombytes "^2.0.0"
 
+dnscache@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/dnscache/-/dnscache-1.0.1.tgz#42cb2b9bfb5e8fbdfa395aac74e127fc05074d31"
+  dependencies:
+    asap "~2.0.3"
+    lodash.clone "~4.3.2"
+
 doctrine@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.0.0.tgz#c73d8d2909d22291e1a007a395804da8b665fe63"
@@ -3125,6 +3136,10 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
+lodash._baseclone@~4.5.0:
+  version "4.5.7"
+  resolved "https://registry.yarnpkg.com/lodash._baseclone/-/lodash._baseclone-4.5.7.tgz#ce42ade08384ef5d62fa77c30f61a46e686f8434"
+
 lodash._basecopy@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/lodash._basecopy/-/lodash._basecopy-3.0.1.tgz#8da0e6a876cf344c0ad8a54882111dd3c5c7ca36"
@@ -3165,6 +3180,12 @@ lodash.assignwith@^4.0.7:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.assignwith/-/lodash.assignwith-4.2.0.tgz#127a97f02adc41751a954d24b0de17e100e038eb"
 
+lodash.clone@~4.3.2:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/lodash.clone/-/lodash.clone-4.3.2.tgz#e56b176b6823a7dde38f7f2bf58de7d5971200e9"
+  dependencies:
+    lodash._baseclone "~4.5.0"
+
 lodash.escape@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/lodash.escape/-/lodash.escape-3.2.0.tgz#995ee0dc18c1b48cc92effae71a10aab5b487698"