diff --git a/ruby/lib/jam_ruby/models/jam_track_track.rb b/ruby/lib/jam_ruby/models/jam_track_track.rb
index c99246876..c0548e6fd 100644
--- a/ruby/lib/jam_ruby/models/jam_track_track.rb
+++ b/ruby/lib/jam_ruby/models/jam_track_track.rb
@@ -24,7 +24,7 @@ module JamRuby
     before_destroy :delete_s3_files
 
     validates :position,        presence: true, numericality: {only_integer: true}, length: {in: 1..1000}
-    validates :part,            length: {maximum: 25}
+    validates :part,            length: {maximum: 35}
     validates :track_type,      inclusion: {in: TRACK_TYPE }
     validates :preview_start_time,  numericality: {only_integer: true}, length: {in: 1..1000},  :allow_nil => true
     validates_uniqueness_of     :part, scope: [:jam_track_id, :instrument_id]