diff --git a/db/migrate/2020091309001_enable_pgcrypto_extension.rb b/db/migrate/2020091309001_enable_pgcrypto_extension.rb
new file mode 100644
index 0000000..e5c01b9
--- /dev/null
+++ b/db/migrate/2020091309001_enable_pgcrypto_extension.rb
@@ -0,0 +1,5 @@
+class EnablePgcryptoExtension < ActiveRecord::Migration[5.0]
+    def change
+        enable_extension 'pgcrypto'
+    end
+end
\ No newline at end of file
diff --git a/db/migrate/20200913091950_create_users.rb b/db/migrate/20200913091950_create_users.rb
index d4053c2..05cf105 100644
--- a/db/migrate/20200913091950_create_users.rb
+++ b/db/migrate/20200913091950_create_users.rb
@@ -1,6 +1,6 @@
 class CreateUsers < ActiveRecord::Migration[6.0]
     def change
-        create_table :users, id: :uuid do |t|
+        create_table :users, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
             t.string :email
             t.string :password
             t.string :username
diff --git a/db/migrate/20200913091956_create_weapons.rb b/db/migrate/20200913091956_create_weapons.rb
index 8128ebe..0e055b0 100644
--- a/db/migrate/20200913091956_create_weapons.rb
+++ b/db/migrate/20200913091956_create_weapons.rb
@@ -1,6 +1,6 @@
 class CreateWeapons < ActiveRecord::Migration[6.0]
     def change
-        create_table :weapons, id: :uuid do |t|
+        create_table :weapons, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
             t.string :name_en
             t.string :name_jp
             t.integer :granblue_id
diff --git a/db/migrate/20200913092001_create_parties.rb b/db/migrate/20200913092001_create_parties.rb
index 95b2203..c2e23fb 100644
--- a/db/migrate/20200913092001_create_parties.rb
+++ b/db/migrate/20200913092001_create_parties.rb
@@ -1,7 +1,7 @@
 class CreateParties < ActiveRecord::Migration[6.0]
     def change
-        create_table :parties, id: :uuid do |t|
             t.belongs_to :user, type: :uuid
+        create_table :parties, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
 
             t.string :hash
 
diff --git a/db/migrate/20200913092024_create_grid_weapons.rb b/db/migrate/20200913092024_create_grid_weapons.rb
index 5f10538..7d4a572 100644
--- a/db/migrate/20200913092024_create_grid_weapons.rb
+++ b/db/migrate/20200913092024_create_grid_weapons.rb
@@ -1,8 +1,8 @@
 class CreateGridWeapons < ActiveRecord::Migration[6.0]
     def change
-        create_table :grid_weapons do |t|
             t.belongs_to :composition, type: :uuid
             
+        create_table :grid_weapons, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
             t.references :weapon, type: :uuid
             t.references :weapon_key1, class_name: 'WeaponKey', type: :uuid
             t.references :weapon_key2, class_name: 'WeaponKey', type: :uuid
diff --git a/db/migrate/20200913092045_create_weapon_keys.rb b/db/migrate/20200913092045_create_weapon_keys.rb
index 1f5ca02..6e5c7d0 100644
--- a/db/migrate/20200913092045_create_weapon_keys.rb
+++ b/db/migrate/20200913092045_create_weapon_keys.rb
@@ -1,6 +1,6 @@
 class CreateWeaponKeys < ActiveRecord::Migration[6.0]
     def change
-        create_table :weapon_keys do |t|
+        create_table :weapon_keys, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
             t.string :name_en
             t.string :name_jp