diff --git a/builder.js b/builder.js
index a846a6d..d813835 100644
--- a/builder.js
+++ b/builder.js
@@ -103,8 +103,8 @@ class UniverseI18nBuilder extends CachingCompiler {
     }
 
     addCompileResult (file, {locale, data, ts}) {
-        if (file.getArch() === 'web.browser' && !_.contains(this.localesInClientBundle, 'all')) {
-            if (!_.contains(this.localesInClientBundle, locale)) {
+        if (file.getArch() === 'web.browser' && !this.localesInClientBundle.includes('all')) {
+            if (!this.localesInClientBundle.includes(locale)) {
                 file.addJavaScript({
                     path: file.getPathInPackage() + '.js',
                     data: ts
diff --git a/lib/i18n.js b/lib/i18n.js
index d04566f..f22f4c7 100644
--- a/lib/i18n.js
+++ b/lib/i18n.js
@@ -1,5 +1,4 @@
 import {Meteor} from 'meteor/meteor';
-import {_} from 'meteor/underscore';
 
 import {Emitter, get, set, RecursiveIterator, deepExtend} from './utilities';
 import {LOCALES, CURRENCIES, SYMBOLS} from './locales';
@@ -158,7 +157,7 @@ export const i18n = {
     _translations: {},
 
     setOptions (options) {
-        i18n.options = _.extend(i18n.options || {}, options);
+        i18n.options = {...(i18n.options || {}), ...options};
     },
 
     //For blaze and autoruns
diff --git a/package.js b/package.js
index dbec5e5..5a222c0 100644
--- a/package.js
+++ b/package.js
@@ -25,13 +25,12 @@ Package.onUse(function (api) {
 
     api.use([
         'ddp',
-        'http',
+        'fetch',
         'check',
         'webapp',
         'tracker',
         'promise',
         'ecmascript',
-        'underscore',
         'isobuild:compiler-plugin@1.0.0'
     ]);
 
diff --git a/server/api.js b/server/api.js
index 56f5e2b..5b8f32e 100644
--- a/server/api.js
+++ b/server/api.js
@@ -1,6 +1,5 @@
 import i18n from '../lib/i18n';
 import locales from '../lib/locales';
-import {_} from 'meteor/underscore';
 import {set} from '../lib/utilities';
 import YAML from 'js-yaml';
 import stripJsonComments from 'strip-json-comments';
@@ -26,7 +25,7 @@ i18n.getCache = function getCache (locale) {
 };
 
 function getDiff (locale, diffWith) {
-    const keys = _.difference(i18n.getAllKeysForLocale(locale), i18n.getAllKeysForLocale(diffWith));
+    const keys = [i18n.getAllKeysForLocale(locale), i18n.getAllKeysForLocale(diffWith)].reduce((a,b) => a.filter(c => !b.includes(c)));
     const diffLoc = {};
     keys.forEach(key => set(diffLoc, key, i18n.getTranslation(key)));
     return diffLoc;
@@ -36,7 +35,7 @@ function getYML (locale, namespace, diffWith) {
     if (namespace && typeof namespace === 'string') {
         if (!cache[locale]['_yml' + namespace]) {
             let translations = i18n.getTranslations(namespace, locale) || {};
-            translations = _.extend({_namespace: namespace}, translations);
+            translations = {_namespace: namespace, ...translations};
             cache[locale]['_yml' + namespace] = YAML.dump(translations, YAML_OPTIONS);
         }
         return cache[locale]['_yml' + namespace];
@@ -57,7 +56,7 @@ function getJSON (locale, namespace, diffWith) {
     if (namespace && typeof namespace === 'string') {
         if (!cache[locale]['_json' + namespace]) {
             let translations = i18n.getTranslations(namespace, locale) || {};
-            translations = _.extend({_namespace: namespace}, translations);
+            translations = {_namespace: namespace, ...translations};
             cache[locale]['_json' + namespace] = JSON.stringify(translations);
         }
         return cache[locale]['_json' + namespace];
@@ -96,7 +95,7 @@ i18n.setOptions({
     }
 });
 
-i18n.loadLocale = (localeName, {
+i18n.loadLocale = async (localeName, {
     host = i18n.options.hostUrl, pathOnHost = i18n.options.pathOnHost,
     queryParams = {}, fresh = false, silent = false
 } = {}) => {
@@ -106,30 +105,23 @@ i18n.loadLocale = (localeName, {
         queryParams.ts = (new Date().getTime());
     }
     let url = URL.resolve(host, pathOnHost + localeName);
-    const promise = new Promise(function (resolve, reject) {
-        HTTP.get(url, {params: queryParams}, (error, result) => {
-            const {content} = result || {};
-            if (error || !content) {
-                return reject(error || 'missing content');
-            }
-            try {
-                i18n.addTranslations(localeName, JSON.parse(stripJsonComments(content)));
-                delete cache[localeName];
-            } catch (e) {
-                return reject(e);
-            }
-            resolve();
-        });
-    });
-    if (!silent) {
-        promise.then(() => {
+    try {
+        const data = await fetch(url, {method: "GET"});
+        const json = await data.json();
+        const {content} = json || {};
+        if (!content) {
+            return console.error('missing content');
+        }
+        i18n.addTranslations(localeName, JSON.parse(stripJsonComments(content)));
+        delete cache[localeName];
+        if (!silent) {
             const locale = i18n.getLocale();
             //If current locale is changed we must notify about that.
             if (locale.indexOf(localeName) === 0 || i18n.options.defaultLocale.indexOf(localeName) === 0) {
-                i18n._emitChange();
+              i18n._emitChange();
             }
-        });
+        }
+    }catch(err){
+        console.error(err);
     }
-    promise.catch(console.error.bind(console));
-    return promise;
 };
diff --git a/server/handler.js b/server/handler.js
index 59ed3b7..01367be 100644
--- a/server/handler.js
+++ b/server/handler.js
@@ -6,7 +6,7 @@ WebApp.connectHandlers.use('/universe/locale/', function(req, res, next) {
 
     const {pathname, query} = url.parse(req.url, true);
     const {type, namespace, preload=false, attachment=false, diff=false} = query || {};
-    if (type && !_.contains(['yml', 'json', 'js'], type)) {
+    if (type && !['yml', 'json', 'js'].includes(type)) {
         res.writeHead(415);
         return res.end();
     }
@@ -27,22 +27,16 @@ WebApp.connectHandlers.use('/universe/locale/', function(req, res, next) {
     }
     switch (type) {
         case 'json':
-            res.writeHead(200, _.extend(
-                {'Content-Type': 'application/json; charset=utf-8'},
-                i18n.options.translationsHeaders, headerPart
-            ));
+            res.writeHead(200, {'Content-Type': 'application/json; charset=utf-8',
+              ...i18n.options.translationsHeaders, ...headerPart});
             return res.end(cache.getJSON(locale, namespace, diff));
         case 'yml':
-            res.writeHead(200, _.extend(
-                {'Content-Type': 'text/yaml; charset=utf-8'},
-                i18n.options.translationsHeaders, headerPart
-            ));
+            res.writeHead(200, {'Content-Type': 'text/yaml; charset=utf-8',
+              ...i18n.options.translationsHeaders, ...headerPart});
             return res.end(cache.getYML(locale, namespace, diff));
         default:
-            res.writeHead(200, _.extend(
-                {'Content-Type': 'application/javascript; charset=utf-8'},
-                i18n.options.translationsHeaders, headerPart
-            ));
+            res.writeHead(200, {'Content-Type': 'application/javascript; charset=utf-8',
+              ...i18n.options.translationsHeaders, ...headerPart});
             return res.end(cache.getJS(locale, namespace, preload));
     }
 });