diff --git a/Gemfile b/Gemfile
index 1bd5c98..5736afa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -81,6 +81,7 @@ gem "dotenv"
 gem "faker"
 gem "htmlbeautifier"
 gem "http"
+gem "rails_db"
 gem "sqlite3", "~> 1.4"
 gem "table_print"
 gem "simple_form"
@@ -94,7 +95,6 @@ group :development do
   gem "draft_generators"
   gem "grade_runner"
   gem "pry-rails"
-  gem "rails_db"
   gem "rails-erd"
   gem "rufo"
   gem "specs_to_readme"
diff --git a/bin/render-start.sh b/bin/render-start.sh
index 4a61d7b..e954e5e 100644
--- a/bin/render-start.sh
+++ b/bin/render-start.sh
@@ -3,4 +3,4 @@
 set -o errexit
 
 # Ruby on Rails
-bundle exec puma -C config/puma.rb
+bundle exec rails server
diff --git a/config/initializers/rails_db.rb b/config/initializers/rails_db.rb
index 83daca3..35d2d4c 100644
--- a/config/initializers/rails_db.rb
+++ b/config/initializers/rails_db.rb
@@ -1,30 +1,27 @@
 if Object.const_defined?('RailsDb')
   RailsDb.setup do |config|
-    # # enabled or not
-    # config.enabled = Rails.env.development?
+    # only enable the gem if environment variables are set for username and password
+    if ENV.fetch("RAILS_DB_USERNAME", nil).present? && ENV.fetch("RAILS_DB_PASSWORD", nil).present?
+      # enable
+      config.enabled = true
 
-    # # automatic engine routes mounting
-    # config.automatic_routes_mount = true
+      # automatic engine routes mounting
+      config.automatic_routes_mount = true
 
-    # set tables which you want to hide ONLY
-    config.black_list_tables = ["ar_internal_metadata"]
+      # set tables which you want to hide ONLY
+      config.black_list_tables = ["ar_internal_metadata"]
 
-    # set tables which you want to show ONLY
-    # config.white_list_tables = ['posts', 'comments']
+      # Enable http basic authentication
+      config.http_basic_authentication_enabled = true
 
-    # # Enable http basic authentication
-    # config.http_basic_authentication_enabled = false
+      # Enable http basic authentication
+      config.http_basic_authentication_user_name = ENV.fetch("RAILS_DB_USERNAME")
 
-    # # Enable http basic authentication
-    # config.http_basic_authentication_user_name = 'rails_db'
-
-    # # Enable http basic authentication
-    # config.http_basic_authentication_password = 'password'
-
-    # # Enable http basic authentication
-    # config.verify_access_proc = proc { |controller| true }
-
-    # # Sandbox mode (only read-only operations)
-    # config.sandbox = false
+      # Enable http basic authentication
+      config.http_basic_authentication_password = ENV.fetch("RAILS_DB_PASSWORD")
+    else
+      config.enabled = false
+      config.automatic_routes_mount = false
+    end
   end
 end
diff --git a/render.yaml b/render.yaml
index 2a0fcc0..6cee2ab 100644
--- a/render.yaml
+++ b/render.yaml
@@ -1,7 +1,7 @@
 services:
   - type: web
     name: my-app-name # the name of this service, you should change this
-    env: ruby # this app is written in ruby
+    runtime: ruby # this app is written in ruby
     plan: free # make sure to set this to free or you'll get billed $$$
     buildCommand: "./bin/render-build.sh" # we already created these two files for you
     startCommand: "./bin/render-start.sh"
@@ -12,6 +12,8 @@ services:
         fromDatabase:
           name: db
           property: connectionString
+      - key: WEB_CONCURRENCY
+        value: 2
 databases: # this section provides some additional database configuration
   - name: db
     plan: free