diff --git a/src/Umbraco.Web.UI.Client/src/rollup.config.js b/src/Umbraco.Web.UI.Client/src/rollup.config.js
index 35efc0410d..c768b276bb 100644
--- a/src/Umbraco.Web.UI.Client/src/rollup.config.js
+++ b/src/Umbraco.Web.UI.Client/src/rollup.config.js
@@ -36,6 +36,11 @@ console.log('--- Copying TinyMCE ---');
 cpSync('./node_modules/tinymce', './dist-cms/tinymce', { recursive: true });
 console.log('--- Copying TinyMCE done ---');
 
+// Copy TinyMCE i18n
+console.log('--- Copying TinyMCE i18n ---');
+cpSync('./node_modules/tinymce-i18n/langs6', './dist-cms/tinymce/langs', { recursive: true });
+console.log('--- Copying TinyMCE i18n done ---');
+
 const readFolders = (path) => readdirSync(path).filter((folder) => lstatSync(`${path}/${folder}`).isDirectory());
 const createModuleDescriptors = (folderName) =>
 	readFolders(`./src/${folderName}`).map((moduleName) => {