diff --git a/core/lib/generators/solidus/update/update_generator.rb b/core/lib/generators/solidus/update/update_generator.rb
index 23166fba897..b32f1c00b14 100644
--- a/core/lib/generators/solidus/update/update_generator.rb
+++ b/core/lib/generators/solidus/update/update_generator.rb
@@ -57,6 +57,22 @@ def create_new_defaults_initializer
                File.join(options[:initializer_directory], "#{options[:initializer_basename]}.rb")
     end
 
+    def print_message
+      say <<~MSG
+
+        ***********************************************************************
+
+        Other tasks may be needed to update to the new Solidus version. Please,
+        check https://github.com/solidusio/solidus/blob/v#{options[:to]}/CHANGELOG.md
+        for details.
+
+        Thanks for using Solidus!
+
+        ***********************************************************************
+
+      MSG
+    end
+
     private
 
     def core_changes_template(from, to)
diff --git a/core/lib/tasks/migrations/delete_prices_with_nil_amount.rake b/core/lib/tasks/migrations/delete_prices_with_nil_amount.rake
deleted file mode 100644
index 96cbaafda3b..00000000000
--- a/core/lib/tasks/migrations/delete_prices_with_nil_amount.rake
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-namespace :solidus do
-  namespace :migrations do
-    namespace :delete_prices_with_nil_amount do
-      task up: :environment do
-        print "Deleting prices wich amount attribute is nil ... "
-        Spree::Price.where(amount: nil).delete_all
-        puts "Success"
-      end
-    end
-  end
-end
diff --git a/core/lib/tasks/solidus/delete_prices_with_nil_amount.rake b/core/lib/tasks/solidus/delete_prices_with_nil_amount.rake
new file mode 100644
index 00000000000..abc328d3105
--- /dev/null
+++ b/core/lib/tasks/solidus/delete_prices_with_nil_amount.rake
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+namespace :solidus do
+  desc "Delete Spree::Price records which amount field is NULL"
+  task delete_prices_with_nil_amount: :environment do
+    Spree::Price.where(amount: nil).delete_all
+  end
+end
diff --git a/core/lib/tasks/upgrade.rake b/core/lib/tasks/upgrade.rake
deleted file mode 100644
index 4d64116c37f..00000000000
--- a/core/lib/tasks/upgrade.rake
+++ /dev/null
@@ -1,22 +0,0 @@
-# frozen_string_literal: true
-
-namespace :solidus do
-  namespace :upgrade do
-    task three_point_zero: [
-        'railties:install:migrations',
-        'db:migrate'
-      ] do
-      puts "Your Solidus install is ready for Solidus 3.0"
-    end
-
-    desc "Upgrade Solidus to version 3.0"
-    task three_point_zero: [
-        'solidus:migrations:delete_prices_with_nil_amount:up',
-      ] do
-      puts "Your Solidus install is ready for Solidus 3.0"
-    end
-  end
-
-  desc "Upgrade to the current Solidus version"
-  task upgrade: 'upgrade:three_point_zero'
-end
diff --git a/core/spec/lib/tasks/migrations/delete_prices_with_nil_amount_spec.rb b/core/spec/lib/tasks/solidus/delete_prices_with_nil_amount_spec.rb
similarity index 62%
rename from core/spec/lib/tasks/migrations/delete_prices_with_nil_amount_spec.rb
rename to core/spec/lib/tasks/solidus/delete_prices_with_nil_amount_spec.rb
index 331fab94b89..e875b1acb8c 100644
--- a/core/spec/lib/tasks/migrations/delete_prices_with_nil_amount_spec.rb
+++ b/core/spec/lib/tasks/solidus/delete_prices_with_nil_amount_spec.rb
@@ -2,14 +2,14 @@
 
 require 'rails_helper'
 
-path = Spree::Core::Engine.root.join('lib/tasks/migrations/delete_prices_with_nil_amount.rake')
+path = Spree::Core::Engine.root.join('lib/tasks/solidus/delete_prices_with_nil_amount.rake')
 
-RSpec.describe 'solidus:migrations:delete_prices_with_nil_amount' do
-  describe 'up' do
+RSpec.describe 'solidus' do
+  describe 'delete_prices_with_nil_amount' do
     include_context(
       'rake',
       task_path: path,
-      task_name: 'solidus:migrations:delete_prices_with_nil_amount:up'
+      task_name: 'solidus:delete_prices_with_nil_amount'
     )
 
     it 'removes all prices which amount column is NULL' do