diff --git a/lib/models/note.js b/lib/models/note.js
index 6efa5d4..7fdc564 100644
--- a/lib/models/note.js
+++ b/lib/models/note.js
@@ -142,7 +142,7 @@ module.exports = function (sequelize, DataTypes) {
                                                     authorship = Note.updateAuthorshipByOperation(operations[i], null, authorship);
                                                 }
                                                 note.update({
-                                                    authorship: authorship
+                                                    authorship: LZString.compressToBase64(JSON.stringify(authorship))
                                                 }).then(function (note) {
                                                     return callback(null, note.id);
                                                 }).catch(function (err) {