diff -r 6f2999873343 -r 76a4e4b11762 src/notes/api/serializers/core.py
--- a/src/notes/api/serializers/core.py	Fri Jun 23 15:57:35 2017 +0200
+++ b/src/notes/api/serializers/core.py	Fri Jun 23 17:58:21 2017 +0200
@@ -19,6 +19,16 @@
         )
         read_only_fields = ('ext_id', 'version', 'created', 'updated')
 
+class UpdateNoteSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Note
+        fields = (
+            'ext_id', 'version', 'created', 'updated',
+            'plain', 'html', 'raw',
+            'categorization', 'margin_note', 'tc_start', 'tc_end'
+        )
+        read_only_fields = ('ext_id', 'version', 'created', 'updated', 'tc_start', 'tc_end')
+
 class CreateNoteSerializer(serializers.ModelSerializer):
     class Meta:
         model = Note