diff --git a/app/blueprints/api/v1/job_blueprint.rb b/app/blueprints/api/v1/job_blueprint.rb
index fe9a079..ba2c9f1 100644
--- a/app/blueprints/api/v1/job_blueprint.rb
+++ b/app/blueprints/api/v1/job_blueprint.rb
@@ -17,7 +17,9 @@ module Api
         ]
       end
 
-      fields :granblue_id, :row, :ml, :order, :accessory, :accessory_type
+      fields :granblue_id, :row, :order,
+             :master_level, :ultimate_mastery,
+             :accessory, :accessory_type
     end
   end
 end
diff --git a/app/blueprints/api/v1/party_blueprint.rb b/app/blueprints/api/v1/party_blueprint.rb
index 61bb005..6b8e19f 100644
--- a/app/blueprints/api/v1/party_blueprint.rb
+++ b/app/blueprints/api/v1/party_blueprint.rb
@@ -68,7 +68,9 @@ module Api
         include_view :characters
         include_view :job_skills
 
-        fields :local_id, :description, :charge_attack, :button_count, :turn_count, :chain_count
+        fields :local_id, :description, :charge_attack,
+               :button_count, :turn_count, :chain_count,
+               :master_level, :ultimate_mastery
 
         association :accessory,
                     blueprint: JobAccessoryBlueprint
diff --git a/db/migrate/20230315103026_add_ultimate_mastery.rb b/db/migrate/20230315103026_add_ultimate_mastery.rb
new file mode 100644
index 0000000..149a2a1
--- /dev/null
+++ b/db/migrate/20230315103026_add_ultimate_mastery.rb
@@ -0,0 +1,6 @@
+class AddUltimateMastery < ActiveRecord::Migration[7.0]
+  def change
+    add_column :parties, :ultimate_mastery, :integer, null: true
+    add_column :jobs, :ultimate_mastery, :boolean, default: false, null: false
+  end
+end
diff --git a/db/migrate/20230315103037_rename_ml_to_master_level.rb b/db/migrate/20230315103037_rename_ml_to_master_level.rb
new file mode 100644
index 0000000..e060330
--- /dev/null
+++ b/db/migrate/20230315103037_rename_ml_to_master_level.rb
@@ -0,0 +1,7 @@
+class RenameMlToMasterLevel < ActiveRecord::Migration[7.0]
+  def change
+    rename_column :parties, :ml, :master_level
+    rename_column :jobs, :ml, :master_level
+    change_column_null :jobs, :master_level, false
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index c4d47af..6095c45 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_03_15_095656) do
+ActiveRecord::Schema[7.0].define(version: 2023_03_15_103037) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "btree_gin"
   enable_extension "pg_trgm"
@@ -154,7 +154,8 @@ ActiveRecord::Schema[7.0].define(version: 2023_03_15_095656) do
     t.integer "proficiency1"
     t.integer "proficiency2"
     t.string "row"
-    t.boolean "ml", default: false
+    t.boolean "master_level", default: false, null: false
+    t.boolean "ultimate_mastery", default: false, null: false
     t.integer "order"
     t.uuid "base_job_id"
     t.string "granblue_id"
@@ -213,7 +214,8 @@ ActiveRecord::Schema[7.0].define(version: 2023_03_15_095656) do
     t.integer "element"
     t.integer "weapons_count"
     t.uuid "job_id"
-    t.integer "ml"
+    t.integer "master_level"
+    t.integer "ultimate_mastery"
     t.uuid "skill1_id"
     t.uuid "skill2_id"
     t.uuid "skill3_id"