diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2457ce..5808eea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,9 @@
 
 ### Security
 
+## [0.3.0] - 2018-04-??
+This gem has been renamed to billwerk and the pactas_itero gem release has been deprecated.
+
 ## [0.3.0] - 2017-09-04
 ### Added
 - get a self service token for a given contract
diff --git a/lib/pactas_itero/client.rb b/lib/pactas_itero/client.rb
index 708a132..b38a653 100644
--- a/lib/pactas_itero/client.rb
+++ b/lib/pactas_itero/client.rb
@@ -11,6 +11,8 @@ class Client
     attr_accessor :bearer_token
 
     def initialize(options = {})
+      warn "[DEPRECATION] This gem has been renamed to billwerk and will no longer be supported. " \
+        "Please switch to the bew gem as soon as possible."
       PactasItero::Configurable.keys.each do |key|
         instance_variable_set(:"@#{key}", options[key] || PactasItero.instance_variable_get(:"@#{key}"))
       end
diff --git a/lib/pactas_itero/version.rb b/lib/pactas_itero/version.rb
index 027cc8f..de41d48 100644
--- a/lib/pactas_itero/version.rb
+++ b/lib/pactas_itero/version.rb
@@ -1,3 +1,3 @@
 module PactasItero
-  VERSION = "0.3.0".freeze
+  VERSION = "0.4.0".freeze
 end
diff --git a/pactas_itero.gemspec b/pactas_itero.gemspec
index d63ed58..d94736d 100644
--- a/pactas_itero.gemspec
+++ b/pactas_itero.gemspec
@@ -33,4 +33,10 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency("rubocop", '~> 0.52.1') # check houndci compatibility before updating rubocop
   spec.add_development_dependency("simplecov", "~> 0.15.0")
   spec.add_development_dependency("webmock", "~> 3.3")
+
+  spec.post_install_message = <<-MESSAGE
+    !    The 'pactas_itero' gem has been deprecated and has been renamed to 'billwerk'.
+    !    See: https://rubygems.org/gems/billwerk
+    !    And: https://github.com/shipcloud/billwerk
+  MESSAGE
 end