diff --git a/lib/health_monitor.rb b/lib/health_monitor.rb
index 1cf29e8..e616965 100644
--- a/lib/health_monitor.rb
+++ b/lib/health_monitor.rb
@@ -1,11 +1,15 @@
 # frozen_string_literal: true
 
+# require external dependencies
 require 'zeitwerk'
-loader = Zeitwerk::Loader.for_gem
-loader.setup
+
+# load zeitwerk
+Zeitwerk::Loader.for_gem.tap do |loader| # rubocop:disable Style/SymbolProc
+  loader.setup
+end
 
 module HealthMonitor
-  require 'health_monitor/engine' if defined?(Rails)
+  require_relative 'health_monitor/engine' if defined?(Rails)
 
   STATUSES = {
     ok:      'OK',
diff --git a/lib/health_monitor/configuration.rb b/lib/health_monitor/configuration.rb
index d994807..45b12aa 100644
--- a/lib/health_monitor/configuration.rb
+++ b/lib/health_monitor/configuration.rb
@@ -22,7 +22,7 @@ def no_database
       class_eval <<-METHOD, __FILE__, __LINE__ + 1
         # frozen_string_literal: true
         def #{provider_name}                                              # def database
-          require "health_monitor/providers/#{provider_name}"             #   require "health_monitor/providers/database"
+          require_relative "providers/#{provider_name}"                   #   require_relative "providers/database"
           add_provider("HealthMonitor::Providers::#{klass}".constantize)  #   add_provider("HealthMonitor::Providers::Database".constantize)
         end                                                               # end
       METHOD