diff --git a/Gemfile.lock b/Gemfile.lock
index a0fba80..db9d655 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,103 +2,142 @@ PATH
   remote: .
   specs:
     pg_tasks (2.2.0.pre.0)
-      rails (~> 5.0)
+      rails (~> 6.1.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.1.3)
-      actionpack (= 5.1.3)
+    actioncable (6.1.7)
+      actionpack (= 6.1.7)
+      activesupport (= 6.1.7)
       nio4r (~> 2.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.1.3)
-      actionpack (= 5.1.3)
-      actionview (= 5.1.3)
-      activejob (= 5.1.3)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (6.1.7)
+      actionpack (= 6.1.7)
+      activejob (= 6.1.7)
+      activerecord (= 6.1.7)
+      activestorage (= 6.1.7)
+      activesupport (= 6.1.7)
+      mail (>= 2.7.1)
+    actionmailer (6.1.7)
+      actionpack (= 6.1.7)
+      actionview (= 6.1.7)
+      activejob (= 6.1.7)
+      activesupport (= 6.1.7)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.3)
-      actionview (= 5.1.3)
-      activesupport (= 5.1.3)
-      rack (~> 2.0)
-      rack-test (~> 0.6.3)
+    actionpack (6.1.7)
+      actionview (= 6.1.7)
+      activesupport (= 6.1.7)
+      rack (~> 2.0, >= 2.0.9)
+      rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.3)
-      activesupport (= 5.1.3)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (6.1.7)
+      actionpack (= 6.1.7)
+      activerecord (= 6.1.7)
+      activestorage (= 6.1.7)
+      activesupport (= 6.1.7)
+      nokogiri (>= 1.8.5)
+    actionview (6.1.7)
+      activesupport (= 6.1.7)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.3)
-      activesupport (= 5.1.3)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (6.1.7)
+      activesupport (= 6.1.7)
       globalid (>= 0.3.6)
-    activemodel (5.1.3)
-      activesupport (= 5.1.3)
-    activerecord (5.1.3)
-      activemodel (= 5.1.3)
-      activesupport (= 5.1.3)
-      arel (~> 8.0)
-    activesupport (5.1.3)
+    activemodel (6.1.7)
+      activesupport (= 6.1.7)
+    activerecord (6.1.7)
+      activemodel (= 6.1.7)
+      activesupport (= 6.1.7)
+    activestorage (6.1.7)
+      actionpack (= 6.1.7)
+      activejob (= 6.1.7)
+      activerecord (= 6.1.7)
+      activesupport (= 6.1.7)
+      marcel (~> 1.0)
+      mini_mime (>= 1.1.0)
+    activesupport (6.1.7)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    arel (8.0.0)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
     ast (2.1.0)
     astrolabe (1.3.1)
       parser (~> 2.2)
-    builder (3.2.3)
-    concurrent-ruby (1.0.5)
-    erubi (1.6.1)
-    globalid (0.4.0)
-      activesupport (>= 4.2.0)
-    i18n (0.8.6)
-    loofah (2.0.3)
+    builder (3.2.4)
+    concurrent-ruby (1.1.10)
+    crass (1.0.6)
+    erubi (1.11.0)
+    globalid (1.0.0)
+      activesupport (>= 5.0)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    loofah (2.19.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.6)
-      mime-types (>= 1.16, < 4)
-    method_source (0.8.2)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
-    minitest (5.10.3)
-    nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    mail (2.8.0)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.2)
+    method_source (1.0.0)
+    mini_mime (1.1.2)
+    mini_portile2 (2.8.0)
+    minitest (5.16.3)
+    net-imap (0.3.1)
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.0)
+      timeout
+    net-smtp (0.3.3)
+      net-protocol
+    nio4r (2.5.8)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     parser (2.2.2.6)
       ast (>= 1.1, < 3.0)
     pg (0.18.2)
     powerpack (0.1.1)
-    rack (2.0.3)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (5.1.3)
-      actioncable (= 5.1.3)
-      actionmailer (= 5.1.3)
-      actionpack (= 5.1.3)
-      actionview (= 5.1.3)
-      activejob (= 5.1.3)
-      activemodel (= 5.1.3)
-      activerecord (= 5.1.3)
-      activesupport (= 5.1.3)
-      bundler (>= 1.3.0)
-      railties (= 5.1.3)
+    racc (1.6.1)
+    rack (2.2.4)
+    rack-test (2.0.2)
+      rack (>= 1.3)
+    rails (6.1.7)
+      actioncable (= 6.1.7)
+      actionmailbox (= 6.1.7)
+      actionmailer (= 6.1.7)
+      actionpack (= 6.1.7)
+      actiontext (= 6.1.7)
+      actionview (= 6.1.7)
+      activejob (= 6.1.7)
+      activemodel (= 6.1.7)
+      activerecord (= 6.1.7)
+      activestorage (= 6.1.7)
+      activesupport (= 6.1.7)
+      bundler (>= 1.15.0)
+      railties (= 6.1.7)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.1.3)
-      actionpack (= 5.1.3)
-      activesupport (= 5.1.3)
+    rails-html-sanitizer (1.4.3)
+      loofah (~> 2.3)
+    railties (6.1.7)
+      actionpack (= 6.1.7)
+      activesupport (= 6.1.7)
       method_source
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
+      rake (>= 12.2)
+      thor (~> 1.0)
     rainbow (2.0.0)
-    rake (12.0.0)
+    rake (13.0.6)
     rubocop (0.33.0)
       astrolabe (~> 1.3)
       parser (>= 2.2.2.5, < 3.0)
@@ -106,20 +145,21 @@ GEM
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
     ruby-progressbar (1.7.5)
-    sprockets (3.7.1)
+    sprockets (4.1.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.0)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
+    sprockets-rails (3.4.2)
+      actionpack (>= 5.2)
+      activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    thor (0.19.4)
-    thread_safe (0.3.6)
-    tzinfo (1.2.3)
-      thread_safe (~> 0.1)
-    websocket-driver (0.6.5)
+    thor (1.2.1)
+    timeout (0.3.1)
+    tzinfo (2.0.5)
+      concurrent-ruby (~> 1.0)
+    websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby
@@ -130,4 +170,4 @@ DEPENDENCIES
   rubocop
 
 BUNDLED WITH
-   1.14.6
+   1.17.3
diff --git a/lib/pg_tasks.rb b/lib/pg_tasks.rb
index 09cd58d..3e62e48 100644
--- a/lib/pg_tasks.rb
+++ b/lib/pg_tasks.rb
@@ -93,14 +93,14 @@ def data_restore(filename)
           set_psql_env
           command = 'pg_restore --data-only --exit-on-error ' \
             ' --disable-triggers --single-transaction --no-privileges --no-owner ' \
-            " -d #{Shellwords.escape(configuration['database'])} " \
+            " -d #{Shellwords.escape(configuration_hash[:database])} " \
             " --use-list=#{restore_list_file.path} " \
             " #{shell_filename}"
           unless Kernel.system(command)
             raise 'Error during data_restore '
           else
             $stdout.puts "Data from '#{filename}' has been restored to \
-                        '#{configuration['database']}'"
+                        '#{configuration_hash[:database]}'"
           end
         ensure
           restore_list_file.close
@@ -113,12 +113,12 @@ def structure_and_data_dump(filename, plain_text = false)
         command = "pg_dump -x -O \
         -F #{plain_text ? 'p' : 'c'} \
         -f #{Shellwords.escape(filename)} \
-        #{Shellwords.escape(configuration['database'])}"
+        #{Shellwords.escape(configuration_hash[:database])}"
         unless Kernel.system(command)
           raise 'Error during structure_and_data_dump'
         else
           $stdout.puts 'Structure and data of ' \
-            "'#{configuration['database']}' has been dumped to '#{filename}'"
+            "'#{configuration_hash[:database]}' has been dumped to '#{filename}'"
         end
       end
 
@@ -130,19 +130,19 @@ def structure_and_data_restore(filename)
         set_psql_env
         command = 'pg_restore --disable-triggers --exit-on-error ' \
           '--single-transaction -x -O -d ' \
-          "#{Shellwords.escape(configuration['database'])} " \
+          "#{Shellwords.escape(configuration_hash[:database])} " \
           "#{Shellwords.escape(filename.to_s)}"
         unless Kernel.system(command)
           raise 'Error during structure_and_data_restore '
         else
-          $stdout.puts "Structure and data of '#{configuration['database']}' " \
+          $stdout.puts "Structure and data of '#{configuration_hash[:database]}' " \
             "has been restored to '#{filename}'"
         end
       end
 
       def terminate_connections
         set_psql_env
-        database = configuration['database']
+        database = configuration_hash[:database]
         command = "psql -c \"SELECT pg_terminate_backend(pg_stat_activity.pid) " \
           ' FROM pg_stat_activity ' \
           "WHERE pg_stat_activity.datname = '#{database}' " \
@@ -162,11 +162,14 @@ module Tasks
     module DatabaseTasks
       def perform_pg_db_task_for_config_and_filename(task_name, *arguments)
         configuration = arguments.first
-        filename = arguments.delete_at 1
-        class_for_adapter(configuration['adapter']) \
-          .new(*arguments).send task_name, filename
+        filename = arguments.delete_at(1)
+        hash_config =
+          ActiveRecord::DatabaseConfigurations::HashConfig.new("test", "primary", configuration)
+        class_for_adapter(hash_config.configuration_hash[:adapter])
+          .new(hash_config)
+          .send(task_name, filename)
       rescue ActiveRecord::NoDatabaseError
-        $stderr.puts "Database '#{configuration['database']}' does not exist"
+        $stderr.puts "Database '#{hash_config.configuration_hash[:database]}' does not exist"
       rescue Exception => error
         $stderr.puts error, *(error.backtrace)
         raise error
@@ -174,8 +177,9 @@ def perform_pg_db_task_for_config_and_filename(task_name, *arguments)
 
       def terminate_connections(*arguments)
         configuration = arguments.first
-        class_for_adapter(configuration['adapter']) \
-          .new(*arguments).send :terminate_connections
+        hash_config =
+          ActiveRecord::DatabaseConfigurations::HashConfig.new("test", "primary", configuration)
+        class_for_adapter(hash_config.configuration_hash[:adapter]).new(hash_config).send :terminate_connections
       end
     end
   end
diff --git a/pg_tasks.gemspec b/pg_tasks.gemspec
index 13440ef..095af9c 100644
--- a/pg_tasks.gemspec
+++ b/pg_tasks.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.files = Dir['{app,config,db,lib}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.rdoc']
   s.test_files = Dir['test/**/*']
 
-  s.add_dependency 'rails', '~> 5.0'
+  s.add_dependency 'rails', '~> 6.1.0'
 
   s.add_development_dependency 'pg'
   s.add_development_dependency 'rubocop'