diff --git a/.docker/redmine/configuration.yml b/.docker/redmine/configuration.yml
index d97b2e26..0e9096ab 100644
--- a/.docker/redmine/configuration.yml
+++ b/.docker/redmine/configuration.yml
@@ -78,7 +78,7 @@ default:
   # You can use `rake redmine:plugins:assets` to manually mirror assets
   # to public/plugin_assets when you install/upgrade a Redmine plugin.
   #
-  mirror_plugins_assets_on_startup: true
+  mirror_plugins_assets_on_startup: false
 
   # Your secret key for verifying cookie session data integrity. If you
   # change this key, all old sessions will become invalid! Make sure the
diff --git a/docker-compose.yml b/docker-compose.yml
index 2464022c..892b096c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,3 @@
-version: '3.1'
 services:
   redmine:
     image: redmine:5.x-toggl2redmine
diff --git a/init.rb b/init.rb
index b272f592..80c38396 100644
--- a/init.rb
+++ b/init.rb
@@ -1,22 +1,26 @@
 # frozen_string_literal: true
 
-require_relative 'lib/toggl_2_redmine'
+Rails.configuration.to_prepare do
+  require_relative 'lib/toggl_2_redmine'
 
-Redmine::Plugin.register :toggl2redmine do
-  # Package info.
-  name 'Toggl 2 Redmine'
-  author 'Jigar Mehta'
-  description 'Imports time entries from Toggl into Redmine.'
-  version Toggl2Redmine::VERSION
-  url 'https://github.com/jigarius/toggl2redmine'
-  author_url 'https://jigarius.com/'
+  Redmine::Plugin.register :toggl2redmine do
+    # Package info.
+    name 'Toggl 2 Redmine'
+    author 'Jigarius'
+    description 'Imports time entries from Toggl into Redmine.'
+    version Toggl2Redmine::VERSION
+    url 'https://github.com/jigarius/toggl2redmine'
+    author_url 'https://jigarius.com/'
 
-  # Menu items.
-  menu :application_menu,
-       :toggl2redmine,
-       { controller: 't2r_import', action: 'index' },
-       caption: 'Toggl'
-end
+    # Menu items.
+    menu :application_menu,
+         :toggl2redmine,
+         { controller: 't2r_import', action: 'index' },
+         caption: 'Toggl'
+  end
 
-# Patches.
-require 'patches/time_entry'
+  Rails.configuration.to_prepare do
+    # Patches.
+    require 'patches/time_entry_patch'
+  end
+end