Index: ChapterX.Application/Writer/Commands/AddHandler.cs
===================================================================
--- ChapterX.Application/Writer/Commands/AddHandler.cs	(revision 877c13c3dd0934c1d31da7988d0d2c2c5925ed55)
+++ ChapterX.Application/Writer/Commands/AddHandler.cs	(revision e882b92860e1899312f197af1134bb0f33d30d15)
@@ -20,5 +20,6 @@
             var writer = new Domain.Entities.Writer
             {
-                Id = request.UserId
+                Id = request.UserId,
+                Bio = request.Bio
             };
 
Index: ChapterX.Application/Writer/Commands/UpdateHandler.cs
===================================================================
--- ChapterX.Application/Writer/Commands/UpdateHandler.cs	(revision 877c13c3dd0934c1d31da7988d0d2c2c5925ed55)
+++ ChapterX.Application/Writer/Commands/UpdateHandler.cs	(revision e882b92860e1899312f197af1134bb0f33d30d15)
@@ -22,5 +22,5 @@
                 return new UpdateResponse(false);
 
-            // No updatable fields on Writer entity
+            writer.Bio = request.Bio;
 
             await _writerRepository.UpdateAsync(writer, cancellationToken);