diff --git a/Gemfile.lock b/Gemfile.lock
index dd747b91..122245ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -269,7 +269,7 @@ GEM
       rack-contrib (>= 1.1, < 3)
       railties (>= 3.0.0, < 6)
     method_source (0.9.0)
-    midi-smtp-server (2.1.4)
+    midi-smtp-server (2.3.1)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
diff --git a/spec/lib/foodsoft_mail_receiver_spec.rb b/spec/lib/foodsoft_mail_receiver_spec.rb
index fea00b58..5901009e 100644
--- a/spec/lib/foodsoft_mail_receiver_spec.rb
+++ b/spec/lib/foodsoft_mail_receiver_spec.rb
@@ -3,7 +3,7 @@ require_relative '../spec_helper'
 describe FoodsoftMailReceiver do
 
   before :all do
-    @server = FoodsoftMailReceiver.new 0
+    @server = FoodsoftMailReceiver.new 2525, '127.0.0.1', 4, logger_severity: 5
     @server.start
   end
 
@@ -42,7 +42,7 @@ describe FoodsoftMailReceiver do
 
   it 'does not accept invalid addresses via SMTP' do
     expect {
-      Net::SMTP.start(@server.host, @server.port) do |smtp|
+      Net::SMTP.start(@server.hosts.first, @server.ports.first) do |smtp|
         smtp.send_message 'body', 'from@example.com', 'invalid'
       end
     }.to raise_error(Net::SMTPFatalError)
@@ -50,7 +50,7 @@ describe FoodsoftMailReceiver do
 
   it 'does not accept invalid addresses via SMTP' do
     expect {
-      Net::SMTP.start(@server.host, @server.port) do |smtp|
+      Net::SMTP.start(@server.hosts.first, @server.ports.first) do |smtp|
         smtp.send_message 'body', 'from@example.com', 'invalid'
       end
     }.to raise_error(Net::SMTPFatalError)