Upgrading CKEditor https://docs.ckeditor.com/#!/guide/dev_upgrade Download new version, copy and replace all files exept custom files: 1) ckeditor-connector.js 2) config.js 3) contents.css custom plugins: 1) plugins\smiley custom skins: 1) skins\teamlab additional plugins: 1) codemirror 2) fakeobjects 3) filetype 4) oembed 5) teamlabcut 6) teamlabquote