diff --git a/lib/data/fastbill.crt b/lib/data/fastbill.crt
deleted file mode 100644
index c998a85..0000000
--- a/lib/data/fastbill.crt
+++ /dev/null
@@ -1,17 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIDJzCCApCgAwIBAgIBATANBgkqhkiG9w0BAQQFADCBzjELMAkGA1UEBhMCWkExFTATBgNVBAgT
-DFdlc3Rlcm4gQ2FwZTESMBAGA1UEBxMJQ2FwZSBUb3duMR0wGwYDVQQKExRUaGF3dGUgQ29uc3Vs
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-UCemDaYj+bvLpgcUQg==
------END CERTIFICATE-----
\ No newline at end of file
diff --git a/lib/data/fastbill.pem b/lib/data/fastbill.pem
new file mode 100644
index 0000000..c45a32b
--- /dev/null
+++ b/lib/data/fastbill.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
+MIIFNjCCBB6gAwIBAgIQLyEoCBXW7dj5PmOg9innQDANBgkqhkiG9w0BAQsFADBv
+MQswCQYDVQQGEwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFk
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+rLBWtQT3EBJ6AyF9Ks9x6uiXc5FQqjMCQUslsCFRkdDogPoMjQmP1kt+QaHASCB+
+pp3k0+Cm4oUXWWQEwLKZEdhAyIRmD6nFk1QvJRADcEM3PgHtcFL39GWhRGsM+vjF
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+I0csHSFsR84hB1eIy4KICgMHvevtKyANZRxX16WYr0LibP93BPNF2sM6
+-----END CERTIFICATE-----
\ No newline at end of file
diff --git a/lib/fastbill-automatic.rb b/lib/fastbill-automatic.rb
index 2bcf7bc..89231b4 100644
--- a/lib/fastbill-automatic.rb
+++ b/lib/fastbill-automatic.rb
@@ -5,7 +5,7 @@
 
 module Fastbill
   module Automatic
-    API_BASE    = "automatic.fastbill.com"
+    API_BASE    = "app.monsum.com"
     API_VERSION = "1.0"
     ROOT_PATH   = File.dirname(__FILE__)
 
diff --git a/lib/fastbill-automatic/article.rb b/lib/fastbill-automatic/article.rb
index 3763fae..7e29eb3 100644
--- a/lib/fastbill-automatic/article.rb
+++ b/lib/fastbill-automatic/article.rb
@@ -1,10 +1,27 @@
 module Fastbill
   module Automatic
     class Article < Base
+      include Fastbill::Automatic::Services::Update
 
-      attr_reader :article_number, :title, :description, :unit_price, :allow_multiple, :is_addon, :currency_code,
-                  :vat_percent, :setup_fee, :subscription_interval, :subscription_number_events, :subscription_trail,
-                  :subscription_duration, :subscription_cancellation, :return_url_success, :return_url_cancel, :checkout_url
+      attr_accessor :article_number,
+                    :title,
+                    :description,
+                    :unit_price,
+                    :allow_multiple,
+                    :is_addon,
+                    :currency_code,
+                    :vat_percent,
+                    :setup_fee,
+                    :subscription_interval,
+                    :subscription_number_events,
+                    :subscription_trail,
+                    :subscription_duration,
+                    :subscription_cancellation,
+                    :return_url_success,
+                    :return_url_cancel,
+                    :checkout_url
+
+      attr_reader :article_id
 
       def self.create(attributes)
         raise FastbillError.new('Create method not implemented.')
diff --git a/lib/fastbill-automatic/request/connection.rb b/lib/fastbill-automatic/request/connection.rb
index a75e0f8..cc28bd9 100644
--- a/lib/fastbill-automatic/request/connection.rb
+++ b/lib/fastbill-automatic/request/connection.rb
@@ -12,7 +12,7 @@ def setup_https
           @https             = Net::HTTP.new(API_BASE, Net::HTTP.https_default_port)
           @https.use_ssl     = true
           @https.verify_mode = OpenSSL::SSL::VERIFY_PEER
-          @https.ca_file     = File.join(ROOT_PATH, "data/fastbill.crt")
+          #@https.ca_file     = File.join(ROOT_PATH, "data/fastbill.pem")
         end
 
         def request