diff --git a/.rubocop.yml b/.rubocop.yml
index e04cbea..f6766b4 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -13,7 +13,7 @@ AllCops:
     - spec/dummy??/**/*
     - vendor/**/*
   SuggestExtensions: false
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
 
 Lint/MissingSuper:
   Exclude:
diff --git a/active_storage_db.gemspec b/active_storage_db.gemspec
index 7d6fd97..9db559a 100644
--- a/active_storage_db.gemspec
+++ b/active_storage_db.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.description = "An ActiveStorage service plugin to store files in database."
   spec.license = "MIT"
 
-  spec.required_ruby_version = ">= 2.7.0"
+  spec.required_ruby_version = ">= 3.0.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
@@ -24,6 +24,6 @@ Gem::Specification.new do |spec|
 
   spec.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
-  spec.add_dependency "activestorage", ">= 6.0"
-  spec.add_dependency "rails", ">= 6.0"
+  spec.add_dependency "activestorage", ">= 6.1"
+  spec.add_dependency "rails", ">= 6.1"
 end
diff --git a/lib/active_storage/service/db_service.rb b/lib/active_storage/service/db_service.rb
index 831265a..03c366a 100644
--- a/lib/active_storage/service/db_service.rb
+++ b/lib/active_storage/service/db_service.rb
@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 
-require "active_storage/service/db_service_rails60"
 require "active_storage/service/db_service_rails61"
 require "active_storage/service/db_service_rails70"
 
@@ -11,10 +10,8 @@ class Service::DBService < Service
     # :nocov:
     if Rails::VERSION::MAJOR >= 7
       include ActiveStorage::DBServiceRails70
-    elsif Rails::VERSION::MAJOR == 6 && Rails::VERSION::MINOR == 1
-      include ActiveStorage::DBServiceRails61
     else
-      include ActiveStorage::DBServiceRails60
+      include ActiveStorage::DBServiceRails61
     end
     # :nocov:
 
@@ -101,7 +98,7 @@ def url_for_direct_upload(key, expires_in:, content_type:, content_length:, chec
           purpose: :blob_token
         )
 
-        url_helpers.update_service_url(verified_token_with_expiration, url_options).tap do |generated_url|
+        url_helpers.update_service_url(verified_token_with_expiration, url_params).tap do |generated_url|
           payload[:url] = generated_url
         end
       end
@@ -150,12 +147,9 @@ def generate_url(key, expires_in:, filename:, content_type:, disposition:)
         purpose: :blob_key
       )
 
-      current_uri = URI.parse(current_host)
       url_helpers.service_url(
         verified_key_with_expiration,
-        protocol: current_uri.scheme,
-        host: current_uri.host,
-        port: current_uri.port,
+        **url_params,
         disposition: content_disposition,
         content_type: content_type,
         filename: filename
diff --git a/lib/active_storage/service/db_service_rails60.rb b/lib/active_storage/service/db_service_rails60.rb
deleted file mode 100644
index 07b7b26..0000000
--- a/lib/active_storage/service/db_service_rails60.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-# frozen_string_literal: true
-
-module ActiveStorage
-  module DBServiceRails60
-    def url(key, expires_in:, filename:, disposition:, content_type:)
-      instrument :url, key: key do |payload|
-        generate_url(key, expires_in: expires_in, filename: filename, content_type: content_type, disposition: disposition).tap do |generated_url|
-          payload[:url] = generated_url
-        end
-      end
-    end
-
-    private
-
-    def current_host
-      url_options[:host]
-    end
-
-    def url_options
-      {
-        host: ActiveStorage::Current.host
-      }
-    end
-  end
-end
diff --git a/lib/active_storage/service/db_service_rails61.rb b/lib/active_storage/service/db_service_rails61.rb
index 6ca65cc..c2ec5c8 100644
--- a/lib/active_storage/service/db_service_rails61.rb
+++ b/lib/active_storage/service/db_service_rails61.rb
@@ -4,10 +4,6 @@ module ActiveStorage
   module DBServiceRails61
     private
 
-    def current_host
-      url_options[:host]
-    end
-
     def private_url(key, expires_in:, filename:, content_type:, disposition:, **)
       generate_url(
         key,
@@ -28,10 +24,9 @@ def public_url(key, filename:, content_type: nil, disposition: :attachment, **)
       )
     end
 
-    def url_options
-      {
-        host: ActiveStorage::Current.host
-      }
+    def url_params
+      uri = URI.parse(ActiveStorage::Current.host)
+      { protocol: uri.scheme, host: uri.host, port: uri.port }
     end
   end
 end
diff --git a/lib/active_storage/service/db_service_rails70.rb b/lib/active_storage/service/db_service_rails70.rb
index f4943cc..063e76c 100644
--- a/lib/active_storage/service/db_service_rails70.rb
+++ b/lib/active_storage/service/db_service_rails70.rb
@@ -3,28 +3,25 @@
 module ActiveStorage
   module DBServiceRails70
     def compose(source_keys, destination_key, **)
-      buffer = nil
-      comment = "DBService#compose"
-      source_keys.each do |source_key|
-        record = ::ActiveStorageDB::File.annotate(comment).find_by(ref: source_key)
-        raise ActiveStorage::FileNotFoundError unless record
+      instrument :compose, key: destination_key do
+        buffer = nil
+        comment = "DBService#compose"
+        source_keys.each do |source_key|
+          record = ::ActiveStorageDB::File.annotate(comment).find_by(ref: source_key)
+          raise ActiveStorage::FileNotFoundError unless record
 
-        if buffer
-          buffer << record.data
-        else
-          buffer = +record.data
+          if buffer
+            buffer << record.data
+          else
+            buffer = +record.data
+          end
         end
+        ::ActiveStorageDB::File.create!(ref: destination_key, data: buffer) if buffer
       end
-      ::ActiveStorageDB::File.create!(ref: destination_key, data: buffer) if buffer
     end
 
     private
 
-    def current_host
-      opts = url_options || {}
-      opts[:port] ? "#{opts[:protocol]}#{opts[:host]}:#{opts[:port]}" : "#{opts[:protocol]}#{opts[:host]}"
-    end
-
     def private_url(key, expires_in:, filename:, content_type:, disposition:, **)
       generate_url(
         key,
@@ -45,8 +42,9 @@ def public_url(key, filename:, content_type: nil, disposition: :attachment, **)
       )
     end
 
-    def url_options
-      ActiveStorage::Current.url_options
+    def url_params
+      opts = ActiveStorage::Current.url_options || {}
+      { protocol: opts[:protocol], host: opts[:host], port: opts[:port] }
     end
   end
 end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 39c80df..674d9ec 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -35,7 +35,7 @@
 require 'factory_bot_rails'
 
 support_files = File.expand_path('support/**/*.rb', __dir__)
-Dir[support_files].sort.each { |f| require f }
+Dir[support_files].each { |f| require f }
 
 RSpec.configure do |config|
   config.filter_rails_from_backtrace!