diff --git a/lib/phaxio.rb b/lib/phaxio.rb
index b4e2060..592c215 100644
--- a/lib/phaxio.rb
+++ b/lib/phaxio.rb
@@ -4,6 +4,7 @@
 require 'openssl'
 require 'time'
 require 'faraday'
+require 'faraday/multipart'
 require 'active_support/core_ext/hash/indifferent_access'
 require 'mime/types/full'
 require 'phaxio/version'
diff --git a/lib/phaxio/version.rb b/lib/phaxio/version.rb
index f10f116..c3b324f 100644
--- a/lib/phaxio/version.rb
+++ b/lib/phaxio/version.rb
@@ -1,3 +1,3 @@
 module Phaxio
-  VERSION = "2.1.1"
+  VERSION = "2.2.0"
 end
diff --git a/phaxio.gemspec b/phaxio.gemspec
index 208e0ea..7af8983 100644
--- a/phaxio.gemspec
+++ b/phaxio.gemspec
@@ -17,7 +17,8 @@ Gem::Specification.new do |gem|
   gem.licenses      = ['MIT']
 
   gem.required_ruby_version = '>= 2.0'
-  gem.add_dependency 'faraday', '>= 0.10', '< 2.0'
+  gem.add_dependency 'faraday', '~> 2.0.1'
+  gem.add_dependency 'faraday-multipart'
   gem.add_dependency 'mime-types', '~> 3.0'
   gem.add_dependency 'activesupport'
 end