diff --git a/db/migrate/20200720143134_change_role_p_kto_bigint.rb b/db/migrate/20200720143134_change_role_p_kto_bigint.rb
new file mode 100644
index 000000000..8ce146cad
--- /dev/null
+++ b/db/migrate/20200720143134_change_role_p_kto_bigint.rb
@@ -0,0 +1,15 @@
+class ChangeRolePKtoBigint < ActiveRecord::Migration[6.0]
+  def up
+    safety_assured {
+      change_column :roles, :id, :bigint
+      change_column :users_roles, :role_id, :bigint
+    }
+  end
+
+  def down
+    safety_assured {
+      change_column :roles, :id, :int
+      change_column :users_roles, :role_id, :int
+    }
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 6ccb0e725..49962110e 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.define(version: 2020_07_19_205123) do
+ActiveRecord::Schema.define(version: 2020_07_20_143134) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -977,7 +977,7 @@ ActiveRecord::Schema.define(version: 2020_07_19_205123) do
     t.index ["user_id"], name: "index_response_templates_on_user_id"
   end
 
-  create_table "roles", id: :serial, force: :cascade do |t|
+  create_table "roles", force: :cascade do |t|
     t.datetime "created_at"
     t.string "name"
     t.integer "resource_id"
@@ -1297,7 +1297,7 @@ ActiveRecord::Schema.define(version: 2020_07_19_205123) do
   end
 
   create_table "users_roles", id: false, force: :cascade do |t|
-    t.integer "role_id"
+    t.bigint "role_id"
     t.integer "user_id"
     t.index ["user_id", "role_id"], name: "index_users_roles_on_user_id_and_role_id"
   end