diff --git a/.gitignore b/.gitignore
index 9fc184e..01c2f01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,13 @@
+.byebug_history
 coverage
-public
 doc
 log/*
 !/log/.keep
-tmp/*
+public
+spec/examples.txt
 spec/output.log
-.byebug_history
 storage/
+tmp/*
 
 # Docker
 docker/colore/variables.env
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index fd9c03f..0c0b9e9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,15 @@
+# frozen_string_literals: true
+
+if ENV['COVERAGE'] || ENV['CI']
+  require 'simplecov'
+
+  SimpleCov.start do
+    add_filter '/spec/'
+
+    track_files 'lib/**/*.rb'
+  end
+end
+
 ENV['RACK_ENV'] = 'test'
 
 require 'pathname'
@@ -10,7 +22,6 @@
 require 'timecop'
 
 Sidekiq.logger = nil
-SimpleCov.start
 
 SPEC_BASE = Pathname.new(__FILE__).realpath.parent