diff --git a/README.md b/README.md
index 7eefc23..ca72f7c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # K8s::Client
 
 [![Build Status](https://travis-ci.com/kontena/k8s-client.svg?branch=master)](https://travis-ci.com/kontena/k8s-client)
+[![Coverage Status](https://coveralls.io/repos/github/kontena/k8s-client/badge.svg)](https://coveralls.io/github/kontena/k8s-client)
 [![Gem Version](https://badge.fury.io/rb/k8s-client.svg)](https://badge.fury.io/rb/k8s-client)
 [![Yard Docs](http://img.shields.io/badge/yard-docs-blue.svg)](http://www.rubydoc.info/github/kontena/k8s-client/master)
 
diff --git a/k8s-client.gemspec b/k8s-client.gemspec
index 4b9333f..e285095 100644
--- a/k8s-client.gemspec
+++ b/k8s-client.gemspec
@@ -35,4 +35,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "webmock", "~> 3.6.2"
   spec.add_development_dependency "rubocop", "~> 0.59"
   spec.add_development_dependency 'yajl-ruby', '~> 1.4.0'
+  spec.add_development_dependency 'coveralls', '~> 0.8'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index f6696c1..67a8cd3 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,9 @@
 require "bundler/setup"
 require 'webmock/rspec'
 
+require 'coveralls'
+Coveralls.wear!
+
 require "k8s-client"
 
 require_relative 'helpers/fixture_helpers'