diff --git a/Gemfile b/Gemfile
index aa357dadb..9a305d6d6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,6 @@ gem "delayed_job_active_record"
 gem "simple_form"
 gem "sanitize"
 gem 'ruby-vips'
-gem 'net-sftp'
 gem 'diff-lcs', :require => "diff/lcs/array"
 gem 'bcrypt', :require => "bcrypt"
 gem 'rubyzip', :require => "zip"
diff --git a/Gemfile.lock b/Gemfile.lock
index f178445ff..3bcc7df2d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -277,9 +277,6 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    net-sftp (3.0.0)
-      net-ssh (>= 5.0.0, < 7.0.0)
-    net-ssh (6.1.0)
     newrelic_rpm (8.0.0)
     nio4r (2.5.8)
     nokogiri (1.12.5)
@@ -525,7 +522,6 @@ DEPENDENCIES
   minitest-reporters
   mocha
   mock_redis
-  net-sftp
   newrelic_rpm
   nokogiri
   oauth2
diff --git a/app/logical/storage_manager.rb b/app/logical/storage_manager.rb
index 94a957bc4..8a2a8a4a0 100644
--- a/app/logical/storage_manager.rb
+++ b/app/logical/storage_manager.rb
@@ -9,7 +9,6 @@
 # @see StorageManager::Local
 # @see StorageManager::Mirror
 # @see StorageManager::Rclone
-# @see StorageManager::SFTP
 class StorageManager
   class Error < StandardError; end
 
diff --git a/app/logical/storage_manager/sftp.rb b/app/logical/storage_manager/sftp.rb
deleted file mode 100644
index bb10aa329..000000000
--- a/app/logical/storage_manager/sftp.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-# A StorageManager that stores files on a remote filesystem using SFTP.
-class StorageManager::SFTP < StorageManager
-  DEFAULT_PERMISSIONS = 0o644
-
-  # http://net-ssh.github.io/net-ssh/Net/SSH.html#method-c-start
-  DEFAULT_SSH_OPTIONS = {
-    timeout: 10,
-    logger: Rails.logger,
-    verbose: :fatal,
-    non_interactive: true
-  }
-
-  attr_reader :hosts, :ssh_options, :base_dir
-
-  def initialize(*hosts, base_dir: nil, ssh_options: {}, **options)
-    @hosts = hosts
-    @base_dir = base_dir.to_s
-    @ssh_options = DEFAULT_SSH_OPTIONS.merge(ssh_options)
-    super(**options)
-  end
-
-  def store(file, dest_path)
-    dest_path = full_path(dest_path)
-    temp_upload_path = dest_path + "-" + SecureRandom.uuid + ".tmp"
-    dest_backup_path = dest_path + "-" + SecureRandom.uuid + ".bak"
-
-    each_host do |_host, sftp|
-      sftp.upload!(file.path, temp_upload_path)
-      sftp.setstat!(temp_upload_path, permissions: DEFAULT_PERMISSIONS)
-
-      # `rename!` can't overwrite existing files, so if a file already exists
-      # at dest_path we move it out of the way first.
-      force { sftp.rename!(dest_path, dest_backup_path) }
-      force { sftp.rename!(temp_upload_path, dest_path) }
-    rescue StandardError => e
-      # if anything fails, try to move the original file back in place (if it was moved).
-      force { sftp.rename!(dest_backup_path, dest_path) }
-      raise Error, e
-    ensure
-      force { sftp.remove!(temp_upload_path) }
-      force { sftp.remove!(dest_backup_path) }
-    end
-  end
-
-  def delete(dest_path)
-    each_host do |_host, sftp|
-      force { sftp.remove!(full_path(dest_path)) }
-    end
-  end
-
-  def open(dest_path)
-    file = Tempfile.new(binmode: true)
-
-    Net::SFTP.start(hosts.first, nil, ssh_options) do |sftp|
-      sftp.download!(full_path(dest_path), file.path)
-    end
-
-    file
-  end
-
-  protected
-
-  # Ignore "no such file" exceptions for the given operation.
-  def force
-    yield
-  rescue Net::SFTP::StatusException => e
-    raise Error, e unless e.description == "no such file"
-  end
-
-  def each_host
-    hosts.each do |host|
-      Net::SFTP.start(host, nil, ssh_options) do |sftp|
-        yield host, sftp
-      end
-    end
-  end
-
-  def full_path(path)
-    File.join(base_dir, path)
-  end
-end
diff --git a/config/danbooru_default_config.rb b/config/danbooru_default_config.rb
index 8be2f0852..f5768ff15 100644
--- a/config/danbooru_default_config.rb
+++ b/config/danbooru_default_config.rb
@@ -196,10 +196,6 @@ module Danbooru
       # base_dir - where to store files (default: under public/data)
       # base_url - where to serve files from (default: https://#{hostname}/data)
       StorageManager::Local.new(base_url: "#{Danbooru.config.canonical_url}/data", base_dir: Rails.root.join("public/data"))
-
-      # Store files on one or more remote host(s). Configure SSH settings in
-      # ~/.ssh_config or in the ssh_options param (ref: http://net-ssh.github.io/net-ssh/Net/SSH.html#method-c-start)
-      # StorageManager::SFTP.new("i1.example.com", "i2.example.com", base_dir: "/mnt/backup", ssh_options: {})
     end
 
     # The method to use for backing up image files.
@@ -209,10 +205,6 @@ module Danbooru
 
       # Backup files to /mnt/backup on the local filesystem.
       # StorageManager::Local.new(base_dir: "/mnt/backup")
-
-      # Backup files to /mnt/backup on a remote system. Configure SSH settings
-      # in ~/.ssh_config or in the ssh_options param (ref: http://net-ssh.github.io/net-ssh/Net/SSH.html#method-c-start)
-      # StorageManager::SFTP.new("www.example.com", base_dir: "/mnt/backup", ssh_options: {})
     end
 
     # Any custom code you want to insert into the default layout without
diff --git a/config/initializers/zeitwerk.rb b/config/initializers/zeitwerk.rb
index 7e5b9951d..538a761fe 100644
--- a/config/initializers/zeitwerk.rb
+++ b/config/initializers/zeitwerk.rb
@@ -1,5 +1,3 @@
 Rails.autoloaders.each do |autoloader|
-  autoloader.inflector.inflect(
-    "sftp" => "SFTP"
-  )
+  autoloader.inflector.inflect({})
 end