diff --git a/app/models/concerns/foreman_azure_rm/vm_extensions/managed_vm.rb b/app/models/concerns/foreman_azure_rm/vm_extensions/managed_vm.rb
index 114d046..3ffb3b3 100644
--- a/app/models/concerns/foreman_azure_rm/vm_extensions/managed_vm.rb
+++ b/app/models/concerns/foreman_azure_rm/vm_extensions/managed_vm.rb
@@ -182,7 +182,7 @@ def initialize_vm(vm_hash)
             arr.each do |item|
               kv = item.split('=')
               vm.tags[kv[0].strip] = kv[1].strip
-            end            
+            end
           end
           unless vm_hash[:availability_set_id].nil?
             sub_resource = MsRestAzure::SubResource.new
diff --git a/foreman_azure_rm.gemspec b/foreman_azure_rm.gemspec
index 405b2ba..f658f23 100644
--- a/foreman_azure_rm.gemspec
+++ b/foreman_azure_rm.gemspec
@@ -1,4 +1,4 @@
-require File.expand_path('../lib/foreman_azure_rm/version', __FILE__)
+require File.expand_path('lib/foreman_azure_rm/version', __dir__)
 require 'date'
 
 Gem::Specification.new do |s|
diff --git a/lib/foreman_azure_rm/engine.rb b/lib/foreman_azure_rm/engine.rb
index caf5cef..3792fcc 100644
--- a/lib/foreman_azure_rm/engine.rb
+++ b/lib/foreman_azure_rm/engine.rb
@@ -4,12 +4,12 @@ class Engine < ::Rails::Engine
 
     #autoloading all files inside lib dir
     config.eager_load_paths += Dir["#{config.root}/lib"]
-    config.eager_load_paths += Dir["#{config.root}/app/models/concerns/foreman_azure_rm/vm_extensions/"]
+    config.eager_load_paths += Dir["#{config.root}/app/models/concerns/"]
     config.eager_load_paths += Dir["#{config.root}/app/helpers/"]
 
     initializer 'foreman_azure_rm.register_plugin', :before => :finisher_hook do
       Foreman::Plugin.register :foreman_azure_rm do
-        requires_foreman '>= 3.7'
+        requires_foreman '>= 3.13'
         register_gettext
         compute_resource ForemanAzureRm::AzureRm
         parameter_filter ComputeResource, :azure_vm, :tenant, :app_ident, :secret_key, :sub_id, :region, :cloud
@@ -29,6 +29,14 @@ class Engine < ::Rails::Engine
       end
     end
 
+    initializer "foreman_azure_rm.zeitwerk" do
+      Rails.autoloaders.each do |loader|
+        loader.ignore(
+          ForemanAzureRm::Engine.root.join('lib/foreman_azure_rm/version.rb')
+        )
+      end
+    end
+
     config.to_prepare do
       require 'azure_mgmt_resources'
       require 'azure_mgmt_network'