diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90067847..1619fe0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # PrivateBin version history
 
   * **1.6.0 (not yet released)**
+    * ADDED: Translations for Japanese & Arabic
     * CHANGED: Minimum required PHP version is 7.3, due to upgrading PHPunit (#707)
   * **1.5.2 (2023-07-09)**
     * ADDED: Allow AWS SDK to use default credential provider chain for S3Storage (#1070)
diff --git a/CREDITS.md b/CREDITS.md
index c07b2ee2..59e7892f 100644
--- a/CREDITS.md
+++ b/CREDITS.md
@@ -63,3 +63,5 @@
 * Stevo984 - Slovak
 * Christos Karamolegkos - Greek
 * jaideejung007 - Thai
+* Nicolas Le Gall - Japanese
+* lazerns - Arabic
diff --git a/js/privatebin.js b/js/privatebin.js
index e0ec5634..bad47cd5 100644
--- a/js/privatebin.js
+++ b/js/privatebin.js
@@ -627,7 +627,7 @@ jQuery.PrivateBin = (function($, RawDeflate) {
          * @prop   {string[]}
          * @readonly
          */
-        const supportedLanguages = ['bg', 'ca', 'co', 'cs', 'de', 'el', 'es', 'et', 'fi', 'fr', 'he', 'hu', 'id', 'it', 'jbo', 'lt', 'no', 'nl', 'pl', 'pt', 'oc', 'ru', 'sk', 'sl', 'th', 'tr', 'uk', 'zh'];
+        const supportedLanguages = ['ar', 'bg', 'ca', 'co', 'cs', 'de', 'el', 'es', 'et', 'fi', 'fr', 'he', 'hu', 'id', 'it', 'ja', 'jbo', 'lt', 'no', 'nl', 'pl', 'pt', 'oc', 'ru', 'sk', 'sl', 'th', 'tr', 'uk', 'zh'];
 
         /**
          * built in language
@@ -802,6 +802,8 @@ jQuery.PrivateBin = (function($, RawDeflate) {
         me.getPluralForm = function(n) {
             switch (language)
             {
+                case 'ar':
+                    return n === 0 ? 0 : (n === 1 ? 1 : (n === 2 ? 2 : (n % 100 >= 3 && n % 100 <= 10 ? 3 : (n % 100 >= 11 ? 4 : 5))));
                 case 'cs':
                 case 'sk':
                     return n === 1 ? 0 : (n >= 2 && n <= 4 ? 1 : 2);
@@ -814,6 +816,7 @@ jQuery.PrivateBin = (function($, RawDeflate) {
                 case 'he':
                     return n === 1 ? 0 : (n === 2 ? 1 : ((n < 0 || n > 10) && (n % 10 === 0) ? 2 : 3));
                 case 'id':
+                case 'ja':
                 case 'jbo':
                 case 'th':
                     return 0;
diff --git a/lib/I18n.php b/lib/I18n.php
index 8df94553..9acea5fd 100644
--- a/lib/I18n.php
+++ b/lib/I18n.php
@@ -315,6 +315,8 @@ class I18n
     protected static function _getPluralForm($n)
     {
         switch (self::$_language) {
+            case 'ar':
+                return $n === 0 ? 0 : ($n === 1 ? 1 : ($n === 2 ? 2 : ($n % 100 >= 3 && $n % 100 <= 10 ? 3 : ($n % 100 >= 11 ? 4 : 5))));
             case 'cs':
             case 'sk':
                 return $n === 1 ? 0 : ($n >= 2 && $n <= 4 ? 1 : 2);
@@ -327,6 +329,7 @@ class I18n
             case 'he':
                 return $n === 1 ? 0 : ($n === 2 ? 1 : (($n < 0 || $n > 10) && ($n % 10 === 0) ? 2 : 3));
             case 'id':
+            case 'ja':
             case 'jbo':
             case 'th':
                 return 0;