diff --git a/lib/launcher.rb b/lib/launcher.rb
index 97eb62377..020968e7e 100644
--- a/lib/launcher.rb
+++ b/lib/launcher.rb
@@ -1,8 +1,8 @@
 require 'proxy/log'
-require 'proxy/sd_notify'
 require 'proxy/settings'
 require 'proxy/signal_handler'
 require 'proxy/log_buffer/trace_decorator'
+require 'sd_notify'
 
 CIPHERS = ['ECDHE-RSA-AES128-GCM-SHA256', 'ECDHE-RSA-AES256-GCM-SHA384',
            'AES128-GCM-SHA256', 'AES256-GCM-SHA384', 'AES128-SHA256',
@@ -212,7 +212,7 @@ def install_webrick_callback!(*apps)
 
     def launched(apps)
       logger.info("Smart proxy has launched on #{apps.size} socket(s), waiting for requests")
-      Proxy::SdNotify.new.tap { |sd| sd.ready if sd.active? }
+      SdNotify.ready
     end
   end
 end
diff --git a/lib/proxy/sd_notify.rb b/lib/proxy/sd_notify.rb
deleted file mode 100644
index 7c267b509..000000000
--- a/lib/proxy/sd_notify.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-require 'socket'
-
-# Implementation of libsystemd's sd_notify API, sends current state via socket
-module Proxy
-  class SdNotify
-    def active?
-      !ENV['NOTIFY_SOCKET'].nil?
-    end
-
-    def notify(message)
-      create_socket.tap do |socket|
-        socket.sendmsg(message.chomp + "\n") # ensure trailing \n
-        socket.close
-      end
-    end
-
-    def ready(state = 1)
-      notify("READY=#{state}")
-    end
-
-    private
-
-    def create_socket
-      raise 'Missing NOTIFY_SOCKET environment variable, is this process running under systemd?' unless active?
-      Socket.new(Socket::AF_UNIX, Socket::SOCK_DGRAM, 0).tap do |socket|
-        socket.connect(Socket.pack_sockaddr_un(ENV['NOTIFY_SOCKET']))
-      end
-    end
-  end
-end
diff --git a/smart_proxy.gemspec b/smart_proxy.gemspec
index e8dddf921..c7df536c3 100644
--- a/smart_proxy.gemspec
+++ b/smart_proxy.gemspec
@@ -16,6 +16,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'json'
   s.add_dependency 'logging'
   s.add_dependency 'rack', '>= 1.3'
+  s.add_dependency 'sd_notify', '~> 0.1'
   s.add_dependency 'sinatra'
   s.description = <<~EOF
     Foreman Proxy is used via The Foreman Project, it allows Foreman to manage
diff --git a/test/launcher_test.rb b/test/launcher_test.rb
index 8c1bff25e..ef9cc7621 100644
--- a/test/launcher_test.rb
+++ b/test/launcher_test.rb
@@ -52,19 +52,7 @@ def test_install_webrick_callback
 
   def test_launched_with_sdnotify
     @launcher.logger.expects(:info).with(includes('2 socket(s)'))
-    sd_notify = mock('SdNotify')
-    sd_notify.expects(:active?).returns(true)
-    sd_notify.expects(:ready)
-    Proxy::SdNotify.expects(:new).returns(sd_notify)
-    @launcher.launched([:app1, :app2])
-  end
-
-  def test_launched_with_sdnotify_inactive
-    @launcher.logger.expects(:info).with(includes('2 socket(s)'))
-    sd_notify = mock('SdNotify')
-    sd_notify.expects(:active?).returns(false)
-    sd_notify.expects(:ready).never
-    Proxy::SdNotify.expects(:new).returns(sd_notify)
+    ::SdNotify.expects(:ready)
     @launcher.launched([:app1, :app2])
   end
 end
diff --git a/test/sd_notify_test.rb b/test/sd_notify_test.rb
deleted file mode 100644
index 57cad6837..000000000
--- a/test/sd_notify_test.rb
+++ /dev/null
@@ -1,58 +0,0 @@
-require 'test_helper'
-require 'proxy/sd_notify'
-
-class SdNotifyTest < Test::Unit::TestCase
-  def test_active_with_notify_socket
-    with_notify_socket('/mock/systemd/notify') do
-      assert Proxy::SdNotify.new.active?
-    end
-  end
-
-  def test_active_without_notify_socket
-    with_notify_socket(nil) do
-      refute Proxy::SdNotify.new.active?
-    end
-  end
-
-  def test_notify
-    assert_equal("TEST=42\n", with_test_socket { Proxy::SdNotify.new.notify('TEST=42') })
-  end
-
-  def test_notify_when_inactive
-    assert_raises(RuntimeError) { with_notify_socket(nil) { Proxy::SdNotify.new.notify('TEST=42') } }
-  end
-
-  def test_ready
-    assert_equal("READY=1\n", with_test_socket { Proxy::SdNotify.new.ready })
-  end
-
-  private
-
-  def with_notify_socket(socket)
-    old_socket = ENV.delete('NOTIFY_SOCKET')
-    begin
-      ENV['NOTIFY_SOCKET'] = socket unless socket.nil?
-      yield
-    ensure
-      if old_socket.nil?
-        ENV.delete('NOTIFY_SOCKET')
-      else
-        ENV['NOTIFY_SOCKET'] = old_socket
-      end
-    end
-  end
-
-  def with_test_socket(&block)
-    socket_path = File.expand_path('tmp/systemd.socket', __dir__)
-    File.delete(socket_path) if File.exist?(socket_path)
-
-    socket = Socket.new(Socket::AF_UNIX, Socket::SOCK_DGRAM, 0)
-    begin
-      socket.bind(Socket.pack_sockaddr_un(socket_path))
-      with_notify_socket(socket_path, &block)
-      socket.recv_nonblock(256)
-    ensure
-      socket.close
-    end
-  end
-end