diff --git a/.eslintrc b/.eslintrc
index 0026929..5248af3 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,3 +1,3 @@
 {
-  "extends": "groupon/legacy"
+  "extends": "groupon/node4"
 }
diff --git a/.gitignore b/.gitignore
index 0138158..aea58fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+/yarn.lock
+/package-lock.json
 node_modules/
 npm-debug.log
 /tmp
diff --git a/.travis.yml b/.travis.yml
index ac742ed..c6c63bd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,17 +1,13 @@
 language: node_js
 node_js:
-  - '0.10'
-  - '4'
-before_install:
-  - npm install -g npm@latest-2
-before_deploy:
-  - 'git config --global user.email "opensource@groupon.com"'
-  - 'git config --global user.name "Groupon"'
+  - 4.6.1
+  - 6.11.5
+  - 8.9.0
 deploy:
-  provider: script
-  script: ./node_modules/.bin/nlm release
-  skip_cleanup: true
-  'on':
-    branch: master
-    node: '4'
+  - provider: script
+    script: ./node_modules/.bin/nlm release
+    skip_cleanup: true
+    'on':
+      branch: master
+      node: 8.9.0
 services: memcached
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 419c8c5..8461db7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +1,4 @@
-<!-- Generated by generator-nlm -->
+<!-- Generated by generator-js -->
 
 # Contributing
 
@@ -8,6 +8,7 @@ This document outlines some of the practices we care about.
 If you have any questions or suggestions about the process,
 feel free to [open an issue](#reporting-issues)
 .
+
 ## How Can I Contribute?
 
 ### Reporting Issues
@@ -51,7 +52,7 @@ The general steps for creating a pull request are:
 1. If you're fixing a bug, be sure to write a test *first*.
    That way you can validate that the test actually catches the bug and doesn't pass.
 1. Make your changes to the code.
-   Remember to update the tests if you add new features or change behavior. 
+   Remember to update the tests if you add new features or change behavior.
 1. Run the tests via `npm test`. This will also run style checks and other validations.
    You might see errors about uncommitted files.
    This is expected until you commit your changes.
diff --git a/lib/backend.js b/lib/backend.js
index 26a795d..1255d25 100644
--- a/lib/backend.js
+++ b/lib/backend.js
@@ -29,9 +29,10 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var typeMap = Object.create(null);
+const typeMap = Object.create(null);
 
 function isBackend(object) {
   return typeof object.get === 'function' && typeof object.set === 'function';
@@ -44,10 +45,10 @@ exports.create = function create(options) {
     return options;
   }
 
-  var type = options.type || 'noop';
-  var BackendClass = typeMap[type];
+  const type = options.type || 'noop';
+  const BackendClass = typeMap[type];
   if (!BackendClass) {
-    throw new Error(type + ' is not a supported cache backend type');
+    throw new Error(`${type} is not a supported cache backend type`);
   }
   return new BackendClass(options);
 };
diff --git a/lib/backends/memcached.js b/lib/backends/memcached.js
index d6ee2a3..8b03694 100644
--- a/lib/backends/memcached.js
+++ b/lib/backends/memcached.js
@@ -29,17 +29,18 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var promisify = require('bluebird').promisify;
-var _ = require('lodash');
-var Memcached = require('memcached');
+const promisify = require('bluebird').promisify;
+const _ = require('lodash');
+const Memcached = require('memcached');
 
 function createClient(options) {
   if (options.client) {
     return options.client;
   }
-  var hosts = options.hosts || '127.0.0.1:11211';
+  const hosts = options.hosts || '127.0.0.1:11211';
   return new Memcached(hosts, options);
 }
 
@@ -50,7 +51,7 @@ function normalizeValue(value) {
 /* Uses anything supporting the memcache protocol */
 function MemcachedBackend(options) {
   this.type = 'memcached';
-  var client = this.client = createClient(options);
+  const client = (this.client = createClient(options));
   this._clientGet = promisify(client.get, { context: client });
   this._clientSet = promisify(client.set, { context: client });
   this._clientDel = promisify(client.del, { context: client });
@@ -62,8 +63,7 @@ MemcachedBackend.prototype.get = function get(key) {
 };
 
 MemcachedBackend.prototype.set = function set(key, value, options) {
-  return this._clientSet(key, value, options.expire)
-    .then(_.constant(value));
+  return this._clientSet(key, value, options.expire).then(_.constant(value));
 };
 
 MemcachedBackend.prototype.unset = function unset(key) {
diff --git a/lib/backends/memory.js b/lib/backends/memory.js
index b3fae23..2f3bc0e 100644
--- a/lib/backends/memory.js
+++ b/lib/backends/memory.js
@@ -29,11 +29,12 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var Bluebird = require('bluebird');
+const Bluebird = require('bluebird');
 
-var util = require('../util');
+const util = require('../util');
 
 /* Stores everything just in memory */
 function MemoryBackend() {
@@ -43,7 +44,7 @@ function MemoryBackend() {
 module.exports = MemoryBackend;
 
 MemoryBackend.prototype.get = function get(key) {
-  var wrappedValue = this.cache[key] || null;
+  let wrappedValue = this.cache[key] || null;
   if (util.isExpired(wrappedValue && wrappedValue.e)) {
     wrappedValue = null;
     delete this.cache[key];
diff --git a/lib/backends/noop.js b/lib/backends/noop.js
index 6454b9a..dbcf862 100644
--- a/lib/backends/noop.js
+++ b/lib/backends/noop.js
@@ -29,9 +29,10 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var Bluebird = require('bluebird');
+const Bluebird = require('bluebird');
 
 /* Simple backend doing nothing */
 function NoopBackend() {
diff --git a/lib/cache.js b/lib/cache.js
index 354883c..530c1f4 100644
--- a/lib/cache.js
+++ b/lib/cache.js
@@ -29,13 +29,16 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
+/* eslint-disable no-underscore-dangle */
+
 'use strict';
 
-var _ = require('lodash');
+const _ = require('lodash');
 
-var Backend = require('./backend');
-var getOrElse = require('./get-or-else');
-var util = require('./util');
+const Backend = require('./backend');
+const getOrElse = require('./get-or-else');
+const util = require('./util');
 
 function Cache(options) {
   this.defaults = {
@@ -43,7 +46,7 @@ function Cache(options) {
     expire: 0,
   };
   this.name = options.name || 'default';
-  this.prefix = this.name + ':';
+  this.prefix = `${this.name}:`;
   this.staleOrPending = {};
 
   this.setDefaults(options.defaults);
@@ -60,9 +63,12 @@ Cache.prototype.setDefaults = function setDefaults(defaults) {
 };
 
 Cache.prototype.setBackend = function setBackend(backendOptions) {
-  backendOptions = typeof backendOptions === 'string' ? {
-    type: backendOptions,
-  } : backendOptions || {};
+  backendOptions =
+    typeof backendOptions === 'string'
+      ? {
+          type: backendOptions,
+        }
+      : backendOptions || {};
   this.end();
   this.backend = Backend.create(backendOptions);
   return this.backend;
@@ -79,27 +85,31 @@ Cache.prototype.prepareOptions = function prepareOptions(options) {
 };
 
 Cache.prototype._set = function _set(key, val, options) {
-  var self = this;
+  const self = this;
   function writeToBackend(resolvedValue) {
-    return self.backend.set(key, {
-      b: util.expiresAt(options.freshFor),
-      d: resolvedValue,
-    }, options);
+    return self.backend.set(
+      key,
+      {
+        b: util.expiresAt(options.freshFor),
+        d: resolvedValue,
+      },
+      options
+    );
   }
 
   return this._applyTimeout(util.toPromise(val).then(writeToBackend));
 };
 
 Cache.prototype.set = function set(rawKey, val, _opts, _cb) {
-  var args = util.optionalOpts(_opts, _cb);
-  var key = this.applyPrefix(rawKey);
-  var optsWithDefaults = this.prepareOptions(args.opts);
+  const args = util.optionalOpts(_opts, _cb);
+  const key = this.applyPrefix(rawKey);
+  const optsWithDefaults = this.prepareOptions(args.opts);
 
   return this._set(key, val, optsWithDefaults).nodeify(args.cb);
 };
 
 Cache.prototype._applyTimeout = function _applyTimeout(value) {
-  var timeoutMs = this.defaults.timeout;
+  const timeoutMs = this.defaults.timeout;
   if (timeoutMs > 0) {
     return value.timeout(timeoutMs);
   }
@@ -114,21 +124,23 @@ Cache.prototype._getWrapped = function _getWrapped(key) {
 Cache.prototype.getWrapped = Cache.prototype._getWrapped;
 
 Cache.prototype.get = function get(rawKey, cb) {
-  var key = this.applyPrefix(rawKey);
+  const key = this.applyPrefix(rawKey);
 
-  return this._getWrapped(key).then(util.extractValue).nodeify(cb);
+  return this._getWrapped(key)
+    .then(util.extractValue)
+    .nodeify(cb);
 };
 
 Cache.prototype.getOrElse = function _getOrElse(rawKey, val, _opts, _cb) {
-  var key = this.applyPrefix(rawKey);
-  var args = util.optionalOpts(_opts, _cb);
-  var optsWithDefaults = this.prepareOptions(args.opts);
+  const key = this.applyPrefix(rawKey);
+  const args = util.optionalOpts(_opts, _cb);
+  const optsWithDefaults = this.prepareOptions(args.opts);
 
   return getOrElse(this, key, val, optsWithDefaults).nodeify(args.cb);
 };
 
 Cache.prototype.unset = function unset(rawKey, cb) {
-  var key = this.applyPrefix(rawKey);
+  const key = this.applyPrefix(rawKey);
 
   return this._unset(key).nodeify(cb);
 };
diff --git a/lib/cached.js b/lib/cached.js
index b265151..95779b6 100644
--- a/lib/cached.js
+++ b/lib/cached.js
@@ -29,17 +29,18 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var Bluebird = require('bluebird');
-var _ = require('lodash');
-var util = require('util');
+const Bluebird = require('bluebird');
+const _ = require('lodash');
+const util = require('util');
 
-var Cache = require('./cache');
+const Cache = require('./cache');
 
-var namedCaches = Object.create(null);
+let namedCaches = Object.create(null);
 
-var getName = util.deprecate(function getName(name) {
+const getName = util.deprecate(function getName(name) {
   return name || 'default';
 }, 'Unnamed caches and caches with non-string names are deprecated.');
 
@@ -49,9 +50,14 @@ function cached(name, options) {
   }
 
   if (!(name in namedCaches)) {
-    namedCaches[name] = cached.createCache(_.extend({
-      name: name,
-    }, options || {}));
+    namedCaches[name] = cached.createCache(
+      _.extend(
+        {
+          name: name,
+        },
+        options || {}
+      )
+    );
   }
   return namedCaches[name];
 }
diff --git a/lib/get-or-else.js b/lib/get-or-else.js
index 35b48b8..f8c55f1 100644
--- a/lib/get-or-else.js
+++ b/lib/get-or-else.js
@@ -29,12 +29,15 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
+/* eslint-disable no-underscore-dangle */
+
 'use strict';
 
-var Bluebird = require('bluebird');
-var _ = require('lodash');
+const Bluebird = require('bluebird');
+const _ = require('lodash');
 
-var util = require('./util');
+const util = require('./util');
 
 function getOrElse(cache, key, val, opts) {
   function resetStaleOrPending(passThroughData) {
@@ -47,13 +50,14 @@ function getOrElse(cache, key, val, opts) {
       return generatedValue === undefined ? null : generatedValue;
     }
 
-    return cache._set(key, generatedValue, opts)
+    return cache
+      ._set(key, generatedValue, opts)
       .then(util.extractValue)
       .catch(fallbackToLoadedValue);
   }
 
   function refreshValue() {
-    var refreshed;
+    let refreshed;
 
     function handleWriteError(err) {
       resetStaleOrPending();
@@ -63,7 +67,8 @@ function getOrElse(cache, key, val, opts) {
       return null;
     }
 
-    refreshed = util.toPromise(val)
+    refreshed = util
+      .toPromise(val)
       .then(writeValue)
       .then(resetStaleOrPending, handleWriteError);
 
@@ -71,17 +76,17 @@ function getOrElse(cache, key, val, opts) {
   }
 
   function verifyFreshness(wrappedValue) {
-    var hit = !!wrappedValue;
-    var expired = util.isExpired(wrappedValue && wrappedValue.b);
-    var loadingNewValue = cache.staleOrPending[key] !== undefined;
+    const hit = !!wrappedValue;
+    const expired = util.isExpired(wrappedValue && wrappedValue.b);
+    let loadingNewValue = cache.staleOrPending[key] !== undefined;
 
     if ((!hit || expired) && !loadingNewValue) {
       cache.staleOrPending[key] = refreshValue();
       loadingNewValue = true;
     }
 
-    var dataFromCache = util.extractValue(wrappedValue);
-    if ((dataFromCache === null) && loadingNewValue) {
+    const dataFromCache = util.extractValue(wrappedValue);
+    if (dataFromCache === null && loadingNewValue) {
       cache.staleOrPending[key].wasEverReturned = true;
       return cache.staleOrPending[key];
     }
@@ -89,7 +94,8 @@ function getOrElse(cache, key, val, opts) {
     return dataFromCache;
   }
 
-  return cache._getWrapped(key)
+  return cache
+    ._getWrapped(key)
     .catch(_.constant(null))
     .then(verifyFreshness);
 }
diff --git a/lib/util.js b/lib/util.js
index d8fc893..e5dc8a8 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -29,9 +29,10 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 'use strict';
 
-var Bluebird = require('bluebird');
+const Bluebird = require('bluebird');
 
 exports.expiresAt = function expiresAt(seconds) {
   if (seconds === 0) {
@@ -48,7 +49,7 @@ exports.isExpired = function isExpired(expires) {
 };
 
 exports.extractValue = function extractValue(wrappedValue) {
-  var value = wrappedValue && wrappedValue.d;
+  const value = wrappedValue && wrappedValue.d;
   // Normalize `undefined` into `null`
   return value === undefined ? null : value;
 };
diff --git a/package.json b/package.json
index e8f4b37..c3f6c1d 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "homepage": "https://github.com/groupon/node-cached",
   "repository": {
     "type": "git",
-    "url": "git+ssh://git@github.com/groupon/node-cached"
+    "url": "https://github.com/groupon/node-cached"
   },
   "bugs": {
     "url": "https://github.com/groupon/node-cached/issues"
@@ -31,12 +31,19 @@
     "memcached": "^2.1.0"
   },
   "devDependencies": {
-    "assertive": "^2.0.0",
+    "assertive": "^2.1.0",
+    "babel-cli": "^6.24.1",
     "babel-core": "^5.8.33",
-    "eslint": "^1.0.0",
-    "eslint-config-groupon": "^2.0.0",
-    "mocha": "^2.0.0",
-    "nlm": "^2.0.0"
+    "babel-eslint": "^8.1.2",
+    "babel-preset-env": "^1.6.0",
+    "eslint": "^4.7.1",
+    "eslint-config-groupon": "^5.0.0",
+    "eslint-plugin-import": "^2.8.0",
+    "eslint-plugin-node": "^5.2.1",
+    "eslint-plugin-prettier": "^2.2.0",
+    "mocha": "^3.1.2",
+    "nlm": "^3.0.0",
+    "prettier": "^1.6.1"
   },
   "author": {
     "name": "Groupon",
diff --git a/test/.eslintrc b/test/.eslintrc
index ef732be..249ac66 100644
--- a/test/.eslintrc
+++ b/test/.eslintrc
@@ -1,9 +1,12 @@
 {
-  "extends": "groupon/base",
   "env": {
     "mocha": true
   },
-  "rules": {
-    "func-names": 0
-  }
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "sourceType": "module",
+    "allowImportExportEverywhere": true,
+    "codeFrame": false
+  },
+  "root": true
 }
diff --git a/test/cached.test.js b/test/cached.test.js
index 311eda1..9b4cb93 100644
--- a/test/cached.test.js
+++ b/test/cached.test.js
@@ -5,8 +5,7 @@ import cached from '..';
 describe('cached', () => {
   beforeEach(() => cached.dropNamedCaches());
 
-  it('is a function', () =>
-    assert.hasType(Function, cached));
+  it('is a function', () => assert.hasType(Function, cached));
 
   it('starts out with no known caches', () =>
     assert.deepEqual([], cached.knownCaches()));
diff --git a/test/get-or-else.test.js b/test/get-or-else.test.js
index 5f761e7..ec215a0 100644
--- a/test/get-or-else.test.js
+++ b/test/get-or-else.test.js
@@ -25,8 +25,9 @@ describe('Cache::getOrElse', () => {
     }
 
     it('falls back on the value refresher', async () => {
-      const value =
-        await cache.getOrElse('bad_get', generateCats, { freshFor: 5 });
+      const value = await cache.getOrElse('bad_get', generateCats, {
+        freshFor: 5,
+      });
       assert.equal('fresh cats', value);
     });
   });
@@ -35,8 +36,7 @@ describe('Cache::getOrElse', () => {
     let cache;
     before(() => {
       cache = new Cache({ backend: 'memory', name: 'awesome-name' });
-      cache.set = () =>
-        Bluebird.reject(new Error('backend set troubles'));
+      cache.set = () => Bluebird.reject(new Error('backend set troubles'));
     });
 
     function generateBunnies() {
@@ -44,8 +44,9 @@ describe('Cache::getOrElse', () => {
     }
 
     it('falls back on the generated value', async () => {
-      const value =
-        await cache.getOrElse('bad_set', generateBunnies, { freshFor: 5 });
+      const value = await cache.getOrElse('bad_set', generateBunnies, {
+        freshFor: 5,
+      });
       assert.equal('generated bunnies', value);
     });
   });
@@ -73,8 +74,12 @@ describe('Cache::getOrElse', () => {
 
       // 4. The value is stale, so it should be calling the value generator.
       //    But it should *return* the original value asap.
-      assert.equal(originalValue,
-        await cache.getOrElse('key1', valueGenerator('G1', 100), { freshFor: 5 }));
+      assert.equal(
+        originalValue,
+        await cache.getOrElse('key1', valueGenerator('G1', 100), {
+          freshFor: 5,
+        })
+      );
 
       // Let the generator be generating...
       await Bluebird.delay(50);
@@ -82,16 +87,24 @@ describe('Cache::getOrElse', () => {
       // 5. Generating 'G1' in the last step takes 100ms but we only waited 50ms yet.
       //    This means we still expect to see the original value.
       //    'G2' should never be generated since there's already a pending value.
-      assert.equal(originalValue,
-        await cache.getOrElse('key1', valueGenerator('G2', 5000), { freshFor: 5 }));
+      assert.equal(
+        originalValue,
+        await cache.getOrElse('key1', valueGenerator('G2', 5000), {
+          freshFor: 5,
+        })
+      );
 
       // Let the generator be generating...
       await Bluebird.delay(100);
 
       // 6. Now G1 is done generating (we waited a total of 150ms), so we shouldn't
       //    see the original value anymore but the new, improved 'G1'.
-      assert.equal('G1',
-        await cache.getOrElse('key1', valueGenerator('G3', 5000), { freshFor: 5 }));
+      assert.equal(
+        'G1',
+        await cache.getOrElse('key1', valueGenerator('G3', 5000), {
+          freshFor: 5,
+        })
+      );
 
       // 7. Making sure that the value generator was only called once during this test.
       //    We just generated 'G1', the other times we either had a pending value
@@ -105,7 +118,8 @@ describe('Cache::getOrElse', () => {
       }
 
       const error = await assertRejects(
-        cache.getOrElse('bad_keys', errorGenerator, { freshFor: 1 }));
+        cache.getOrElse('bad_keys', errorGenerator, { freshFor: 1 })
+      );
       assert.equal('Big Error', error.message);
     });
 
@@ -114,7 +128,8 @@ describe('Cache::getOrElse', () => {
       const value = 'refresh-value';
 
       before('set value that is stale after a second', () =>
-        cache.set(key, value, { freshFor: 1, expire: 3 }));
+        cache.set(key, value, { freshFor: 1, expire: 3 })
+      );
 
       before('wait >1 seconds', () => Bluebird.delay(1100));
 
diff --git a/test/get-set.test.js b/test/get-set.test.js
index 611d251..3e40c46 100644
--- a/test/get-set.test.js
+++ b/test/get-set.test.js
@@ -26,7 +26,6 @@ describe('Cache::{get,set,unset}', () => {
       assert.equal('promise-value', await cache.get('promise-key'));
     });
 
-
     it('set/unset (callback style', done => {
       cache.set('callback-key', 'callback-value', setError => {
         if (setError) return done(setError);
@@ -67,8 +66,10 @@ describe('Cache::{get,set,unset}', () => {
 
       await Bluebird.delay(2000);
 
-      const [expired, eternal, hit] =
-        await Bluebird.map(['key', 'key2', 'key3'], key => cache.get(key));
+      const [expired, eternal, hit] = await Bluebird.map(
+        ['key', 'key2', 'key3'],
+        key => cache.get(key)
+      );
 
       assert.equal(null, expired);
       assert.equal(values.key2, eternal);
diff --git a/test/timeout.test.js b/test/timeout.test.js
index b8d9a91..6c2a221 100644
--- a/test/timeout.test.js
+++ b/test/timeout.test.js
@@ -19,7 +19,7 @@ describe('Cache timeouts', () => {
   });
 
   describe('with a timeout <150ms', () => {
-    before(() => cache.defaults.timeout = 50);
+    before(() => (cache.defaults.timeout = 50));
 
     it('get fails fast', async () => {
       const err = await Bluebird.race([
@@ -51,7 +51,7 @@ describe('Cache timeouts', () => {
   });
 
   describe('with a timeout >150ms', () => {
-    before(() => cache.defaults.timeout = 250);
+    before(() => (cache.defaults.timeout = 250));
 
     it('receives the value', async () => {
       const value = await Bluebird.race([