diff --git a/README.md b/README.md
index 6c8fe4fc..b9a1a11f 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,7 @@ These options can be configured by setting environment variables using `-e KEY="
 | `WG_POST_UP` | `...` | `iptables ...` | See [config.js](https://github.com/wg-easy/wg-easy/blob/master/src/config.js#L20) for the default value. |
 | `WG_PRE_DOWN` | `...` | - | See [config.js](https://github.com/wg-easy/wg-easy/blob/master/src/config.js#L27) for the default value. |
 | `WG_POST_DOWN` | `...` | `iptables ...` | See [config.js](https://github.com/wg-easy/wg-easy/blob/master/src/config.js#L28) for the default value. |
+| `LANG` | `en` | `de` | Web UI language (Supports: en, ru, tr, no, pl, fr, de, ca). |
 
 > If you change `WG_PORT`, make sure to also change the exposed port.
 
diff --git a/docker-compose.yml b/docker-compose.yml
index d59aa9cf..67f7fb74 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,7 +6,7 @@ services:
   wg-easy:
     environment:
       # Change Language:
-      # (Supports: en, ru, tr, no, pl, fr, de)
+      # (Supports: en, ru, tr, no, pl, fr, de, ca)
       - LANG=de
       # ⚠️ Required:
       # Change this to your host's public address
diff --git a/src/www/js/i18n.js b/src/www/js/i18n.js
index 1a2bafb2..71266039 100644
--- a/src/www/js/i18n.js
+++ b/src/www/js/i18n.js
@@ -191,4 +191,31 @@ const messages = { // eslint-disable-line no-unused-vars
     madeBy: 'Erstellt von',
     donate: 'Spenden',
   },
+  ca: { // github.com/guillembonet
+    name: 'Nom',
+    password: 'Contrasenya',
+    signIn: 'Iniciar sessió',
+    logout: 'Tanca sessió',
+    updateAvailable: 'Hi ha una actualització disponible!',
+    update: 'Actualitza',
+    clients: 'Clients',
+    new: 'Nou',
+    deleteClient: 'Esborra client',
+    deleteDialog1: 'Estàs segur que vols esborrar aquest client?',
+    deleteDialog2: 'Aquesta acció no es pot desfer.',
+    cancel: 'Cancel·la',
+    create: 'Crea',
+    createdOn: 'Creat el ',
+    lastSeen: 'Última connexió el ',
+    totalDownload: 'Baixada total: ',
+    totalUpload: 'Pujada total: ',
+    newClient: 'Nou client',
+    disableClient: 'Desactiva client',
+    enableClient: 'Activa client',
+    noClients: 'Encara no hi ha cap client.',
+    showQR: 'Mostra codi QR',
+    downloadConfig: 'Descarrega configuració',
+    madeBy: 'Fet per',
+    donate: 'Donatiu',
+  },
 };