diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index ab9fbb4..876d1fe 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,5 +1,8 @@
 require 'simplecov'
-SimpleCov.start
+
+SimpleCov.start do
+  add_filter '/spec/'
+end
 
 if ENV['CI'] == 'true'
   require 'codecov'