diff --git a/.gitignore b/.gitignore
index c352266..7a48c16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 .yardoc
 .idea
 .vscode
+.rubocop.yml
 bin
 .DS_Store
 Gemfile.lock
diff --git a/lib/tracker_api.rb b/lib/tracker_api.rb
index 86fe10e..1a1ba88 100644
--- a/lib/tracker_api.rb
+++ b/lib/tracker_api.rb
@@ -9,9 +9,9 @@
 else
   require 'core_ext/object/blank'
 end
-require 'equalizer'
 
 require 'multi_json'
+require 'oj'
 require 'representable/json'
 
 # stdlib
@@ -19,8 +19,7 @@
 require 'forwardable'
 require 'logger'
 
-MultiJson.load_options = {:mode => :compat}
-MultiJson.dump_options = {:mode => :compat}
+Oj.default_options = {:mode => :compat }
 
 module TrackerApi
   autoload :Error, 'tracker_api/error'
@@ -59,8 +58,9 @@ module Endpoints
   module Resources
     module Shared
       autoload :Base, 'tracker_api/resources/shared/base'
-      autoload :Collection, 'tracker_api/resources/shared/collection'
     end
+    autoload :Types, 'tracker_api/resources/types'
+    autoload :Resource, 'tracker_api/resources/resource'
     autoload :Activity, 'tracker_api/resources/activity'
     autoload :Account, 'tracker_api/resources/account'
     autoload :Change, 'tracker_api/resources/change'
diff --git a/lib/tracker_api/client.rb b/lib/tracker_api/client.rb
index c092451..af63b3e 100644
--- a/lib/tracker_api/client.rb
+++ b/lib/tracker_api/client.rb
@@ -36,7 +36,7 @@ def initialize(options={}, &block)
       @connection = Faraday.new({ url: @url }.merge(connection_options)) do |builder|
         # response
         builder.use Faraday::Response::RaiseError
-        builder.response :json
+        builder.use ParseJsonWithSymbols
 
         # request
         builder.request :multipart
@@ -285,4 +285,15 @@ def next_page_params
       end
     end
   end
+
+  require 'faraday_middleware/response_middleware'
+  class ParseJsonWithSymbols < FaradayMiddleware::ResponseMiddleware
+    dependency do
+      require 'Oj' unless defined?(Oj)
+    end
+
+    define_parser do |body|
+      Oj.load(body, symbol_keys: true) unless body.strip.empty?
+    end
+  end
 end
diff --git a/lib/tracker_api/resources/me.rb b/lib/tracker_api/resources/me.rb
index 5e3ea32..3f6b67d 100644
--- a/lib/tracker_api/resources/me.rb
+++ b/lib/tracker_api/resources/me.rb
@@ -1,21 +1,19 @@
 module TrackerApi
   module Resources
-    class Me
-      include Shared::Base
-
-      attribute :name, String
-      attribute :initials, String
-      attribute :username, String
-      attribute :time_zone, TimeZone
-      attribute :api_token, String
-      attribute :has_google_identity, Boolean
-      attribute :project_ids, [Integer]
-      attribute :projects, [MembershipSummary]
-      attribute :workspace_ids, [Integer]
-      attribute :workspaces, [Workspace]
-      attribute :email, String
-      attribute :receives_in_app_notifications, Boolean
-      attribute :kind, String
+    class Me < Resource
+      attribute :name, Types::Coercible::String
+      attribute :initials, Types::Coercible::String
+      attribute :username, Types::Coercible::String
+      # attribute :time_zone, TimeZone
+      attribute :api_token, Types::Coercible::String
+      attribute :has_google_identity, Types::Strict::Bool
+      attribute :project_ids, Types::Strict::Array.member(Types::Coercible::Int)
+      attribute :projects, Types::Strict::Array.member(MembershipSummary)
+      attribute :workspace_ids, Types::Strict::Array.member(Types::Coercible::Int)
+      # attribute :workspaces, Types::Strict::Array.member(Workspace)
+      attribute :email, Types::Coercible::String
+      attribute :receives_in_app_notifications, Types::Strict::Bool
+      attribute :kind, Types::Coercible::String
     end
   end
 end
diff --git a/lib/tracker_api/resources/membership_summary.rb b/lib/tracker_api/resources/membership_summary.rb
index 56c4c6a..dc583fc 100644
--- a/lib/tracker_api/resources/membership_summary.rb
+++ b/lib/tracker_api/resources/membership_summary.rb
@@ -1,14 +1,12 @@
 module TrackerApi
   module Resources
-    class MembershipSummary
-      include Shared::Base
-
-      attribute :kind, String
-      attribute :last_viewed_at, DateTime
-      attribute :project_color, String
-      attribute :project_id, Integer
-      attribute :project_name, String
-      attribute :role, String
+    class MembershipSummary < Resource
+      attribute :kind, Types::Coercible::String
+      attribute :last_viewed_at, Types::DateTime
+      attribute :project_color, Types::Coercible::String
+      attribute :project_id, Types::Coercible::Int
+      attribute :project_name, Types::Coercible::String
+      attribute :role, Types::Coercible::String
     end
   end
 end
diff --git a/lib/tracker_api/resources/resource.rb b/lib/tracker_api/resources/resource.rb
new file mode 100644
index 0000000..aa7496f
--- /dev/null
+++ b/lib/tracker_api/resources/resource.rb
@@ -0,0 +1,14 @@
+require 'dry-struct'
+
+module TrackerApi
+  module Resources
+    # Base class for all resources
+    class Resource < Dry::Struct
+      constructor_type :schema
+
+      include Dry::Equalizer(:id)
+
+      attribute :id, Types::Coercible::Int
+    end
+  end
+end
diff --git a/lib/tracker_api/resources/types.rb b/lib/tracker_api/resources/types.rb
new file mode 100644
index 0000000..8e27b48
--- /dev/null
+++ b/lib/tracker_api/resources/types.rb
@@ -0,0 +1,11 @@
+require 'dry-types'
+
+module TrackerApi
+  module Resources
+    module Types
+      include Dry::Types.module
+
+      # Statuses = Types::Strict::String.enum('draft', 'published', 'archived')
+    end
+  end
+end
diff --git a/tracker_api.gemspec b/tracker_api.gemspec
index d513273..ccc6d68 100644
--- a/tracker_api.gemspec
+++ b/tracker_api.gemspec
@@ -28,10 +28,13 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'addressable'
   spec.add_dependency 'virtus'
+  spec.add_dependency 'dry-struct'
+  spec.add_dependency 'dry-equalizer'
   spec.add_dependency 'faraday', '~> 0.9.0'
   spec.add_dependency 'faraday_middleware'
   spec.add_dependency 'excon'
-  spec.add_dependency 'equalizer'
+  # spec.add_dependency 'equalizer'
   spec.add_dependency 'representable'
   spec.add_dependency 'multi_json'
+  spec.add_dependency 'oj'
 end