diff --git a/.gitignore b/.gitignore
index cec3cb5..c697e22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.gem
 Gemfile.lock
+/coverage
diff --git a/.rspec b/.rspec
new file mode 100644
index 0000000..82b8369
--- /dev/null
+++ b/.rspec
@@ -0,0 +1 @@
+--require spec_helper
\ No newline at end of file
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..d8a8f62
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+require 'simplecov'
+SimpleCov.start
diff --git a/wikibase_representable.gemspec b/wikibase_representable.gemspec
index fc808be..625b841 100644
--- a/wikibase_representable.gemspec
+++ b/wikibase_representable.gemspec
@@ -35,7 +35,9 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'representable', '~> 3.2'
   spec.add_development_dependency 'bundler', '~> 2.5'
   spec.add_development_dependency 'diffy', '~> 3.4'
+  spec.add_development_dependency 'pry', '~> 0.15.2'
   spec.add_development_dependency 'rake', '~> 13.2'
   spec.add_development_dependency 'rspec', '~> 3.13'
+  spec.add_development_dependency 'simplecov', '~> 0.22.0'
   spec.add_development_dependency 'upennlib-rubocop', '~> 1.2.0'
 end