diff --git a/cvat-core/src/labels.js b/cvat-core/src/labels.js
index 7daf84c666c6a9385a801202c6a0340701de2412..7e673245d1193ab5af552ba70849946716276e2a 100644
--- a/cvat-core/src/labels.js
+++ b/cvat-core/src/labels.js
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2020 Intel Corporation
+// Copyright (C) 2019-2021 Intel Corporation
 //
 // SPDX-License-Identifier: MIT
 
@@ -171,17 +171,21 @@
                      * @name name
                      * @type {string}
                      * @memberof module:API.cvat.classes.Label
-                     * @readonly
                      * @instance
                      */
                     name: {
                         get: () => data.name,
+                        set: (name) => {
+                            if (typeof name !== 'string') {
+                                throw new ArgumentError(`Name must be a string, but ${typeof name} was given`);
+                            }
+                            data.name = name;
+                        },
                     },
                     /**
                      * @name color
                      * @type {string}
                      * @memberof module:API.cvat.classes.Label
-                     * @readonly
                      * @instance
                      */
                     color: {
diff --git a/cvat-ui/src/components/labels-editor/label-form.tsx b/cvat-ui/src/components/labels-editor/label-form.tsx
index 4d7639524dfccc7d518c2b0179701cdea9a6e919..c0f78329a53c37143349b0f7a24003ba525aa0a4 100644
--- a/cvat-ui/src/components/labels-editor/label-form.tsx
+++ b/cvat-ui/src/components/labels-editor/label-form.tsx
@@ -374,7 +374,6 @@ export default class LabelForm extends React.Component<Props> {
     private renderLabelNameInput(): JSX.Element {
         const { label, labelNames } = this.props;
         const value = label ? label.name : '';
-        const locked = label ? label.id >= 0 : false;
 
         return (
             <Form.Item
@@ -399,7 +398,7 @@ export default class LabelForm extends React.Component<Props> {
                     },
                 ]}
             >
-                <Input disabled={locked} placeholder='Label name' />
+                <Input placeholder='Label name' />
             </Form.Item>
         );
     }
diff --git a/cvat/apps/engine/serializers.py b/cvat/apps/engine/serializers.py
index fdc306e70abc17b0f48d440592acbb2ae5324e2f..c617b01fff3c48316899a05d707310241a66dad0 100644
--- a/cvat/apps/engine/serializers.py
+++ b/cvat/apps/engine/serializers.py
@@ -6,7 +6,7 @@ import os
 import re
 import shutil
 
-from rest_framework import serializers
+from rest_framework import serializers, exceptions
 from django.contrib.auth.models import User, Group
 
 from cvat.apps.engine import models
@@ -66,6 +66,7 @@ class AttributeSerializer(serializers.ModelSerializer):
         return attribute
 
 class LabelSerializer(serializers.ModelSerializer):
+    id = serializers.IntegerField(required=False)
     attributes = AttributeSerializer(many=True, source='attributespec_set',
         default=[])
     color = serializers.CharField(allow_blank=True, required=False)
@@ -84,12 +85,17 @@ class LabelSerializer(serializers.ModelSerializer):
         else:
             instance['task'] = parent_instance
             logger = slogger.task[parent_instance.id]
-        (db_label, created) = models.Label.objects.get_or_create(name=validated_data['name'],
-            **instance)
-        if created:
-            logger.info("New {} label was created".format(db_label.name))
+        if not validated_data.get('id') is None:
+            try:
+                db_label = models.Label.objects.get(id=validated_data['id'],
+                    **instance)
+            except models.Label.DoesNotExist:
+                raise exceptions.NotFound(detail='Not found label with id #{} to change'.format(validated_data['id']))
+            db_label.name = validated_data.get('name', db_label.name)
+            logger.info("{}({}) label was updated".format(db_label.name, db_label.id))
         else:
-            logger.info("{} label was updated".format(db_label.name))
+            db_label = models.Label.objects.create(name=validated_data.get('name'), **instance)
+            logger.info("New {} label was created".format(db_label.name))
         if not validated_data.get('color', None):
             label_names = [l.name for l in
                 instance[tuple(instance.keys())[0]].label_set.exclude(id=db_label.id).order_by('id')