diff --git a/lib/as2.rb b/lib/as2.rb
index 8d9c967..f7d55fb 100644
--- a/lib/as2.rb
+++ b/lib/as2.rb
@@ -1,5 +1,3 @@
-require 'openssl'
-require 'mail'
 require 'securerandom'
 require 'as2/config'
 require 'as2/server'
diff --git a/lib/as2/client.rb b/lib/as2/client.rb
index 299c132..74d382b 100644
--- a/lib/as2/client.rb
+++ b/lib/as2/client.rb
@@ -1,4 +1,6 @@
+require 'mail'
 require 'net/http'
+require 'openssl'
 
 module As2
   class Client
diff --git a/lib/as2/config.rb b/lib/as2/config.rb
index d82733e..bf3e41d 100644
--- a/lib/as2/config.rb
+++ b/lib/as2/config.rb
@@ -1,4 +1,6 @@
+require 'openssl'
 require 'uri'
+
 module As2
   module Config
     def self.build_certificate(input)
diff --git a/lib/as2/server.rb b/lib/as2/server.rb
index 750fc6f..2320471 100644
--- a/lib/as2/server.rb
+++ b/lib/as2/server.rb
@@ -1,6 +1,8 @@
-require 'rack'
 require 'logger'
+require 'openssl'
+require 'rack'
 require 'stringio'
+
 require 'as2/mime_generator'
 require 'as2/message'