diff --git a/public/index.html b/public/index.html
index 15922f3..f7df927 100644
--- a/public/index.html
+++ b/public/index.html
@@ -230,6 +230,11 @@
                         <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
                         <span>(Kannada)</span>
                     </button>
+                    <button class="btn fw wrap" value="hu">
+                        <span>Magyar</span>
+                        <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
+                        <span>(Hungarian)</span>
+                    </button>
                     <button class="btn fw wrap" value="nl">
                         <span>Nederlands</span>
                         <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
@@ -240,6 +245,11 @@
                         <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
                         <span>(Norwegian)</span>
                     </button>
+                    <button class="btn fw wrap" value="pl">
+                        <span>Polski</span>
+                        <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
+                        <span>(Polish)</span>
+                    </button>
                     <button class="btn fw wrap" value="pt-BR">
                         <span>Português do Brasil</span>
                         <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
@@ -263,7 +273,12 @@
                     <button class="btn fw wrap" value="zh-CN">
                         <span>中文</span>
                         <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
-                        <span>(Chinese)</span>
+                        <span>(Simplified Chinese)</span>
+                    </button>
+                    <button class="btn fw wrap" value="zh-TW">
+                        <span>漢語</span>
+                        <span>&nbsp;&nbsp;-&nbsp;&nbsp;</span>
+                        <span>(Traditional Chinese)</span>
                     </button>
                     <button class="btn fw wrap" value="ja">
                         <span>日本語</span>
diff --git a/public/scripts/localization.js b/public/scripts/localization.js
index c0f2145..d5eb313 100644
--- a/public/scripts/localization.js
+++ b/public/scripts/localization.js
@@ -3,7 +3,7 @@ class Localization {
         Localization.$htmlRoot = document.querySelector('html');
 
         Localization.defaultLocale = "en";
-        Localization.supportedLocales = ["ar", "ca", "de", "en", "es", "fr", "id", "it", "ja", "kn", "nb", "nl", "pt-BR", "ro", "ru", "tr", "zh-CN"];
+        Localization.supportedLocales = ["ar", "ca", "de", "en", "es", "fr", "hu", "id", "it", "ja", "kn", "nb", "nl", "pl", "pt-BR", "ro", "ru", "tr", "zh-CN", "zh-TW"];
         Localization.supportedLocalesRtl = ["ar"];
 
         Localization.translations = {};
diff --git a/public/service-worker.js b/public/service-worker.js
index b7d8085..a9341a2 100644
--- a/public/service-worker.js
+++ b/public/service-worker.js
@@ -32,17 +32,20 @@ const relativePathsToCache = [
     'lang/en.json',
     'lang/es.json',
     'lang/fr.json',
+    'lang/hu.json',
     'lang/id.json',
     'lang/it.json',
     'lang/ja.json',
     'lang/kn.json',
     'lang/nb.json',
     'lang/nl.json',
+    'lang/pl.json',
     'lang/pt-BR.json',
     'lang/ro.json',
     'lang/ru.json',
     'lang/tr.json',
-    'lang/zh-CN.json'
+    'lang/zh-CN.json',
+    'lang/zh-TW.json'
 ];
 const relativePathsNotToCache = [
     'config'