diff --git a/app/models/account.rb b/app/models/account.rb
index 28bd828b0..428f0854a 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -91,7 +91,7 @@ class Account < ApplicationRecord
   validates :username, format: { with: /\A[a-z0-9_]+\z/i }, length: { maximum: 30 }, if: -> { local? && will_save_change_to_username? && actor_type != 'Application' }
   validates_with UnreservedUsernameValidator, if: -> { local? && will_save_change_to_username? && actor_type != 'Application' }
   validates :display_name, length: { maximum: 30 }, if: -> { local? && will_save_change_to_display_name? }
-  validates :note, note_length: { maximum: 500 }, if: -> { local? && will_save_change_to_note? }
+  validates :note, note_length: { maximum: 5000 }, if: -> { local? && will_save_change_to_note? }
   validates :fields, length: { maximum: 4 }, if: -> { local? && will_save_change_to_fields? }
 
   scope :remote, -> { where.not(domain: nil) }