diff --git a/.simplecov b/.simplecov
index b81ebfeb..efee8860 100644
--- a/.simplecov
+++ b/.simplecov
@@ -1,3 +1,7 @@
 if ENV['COVERAGE'] == 'on'
-  SimpleCov.start 'rails'
+  SimpleCov.start 'rails' do
+    add_group 'Policies', 'app/policies'
+    add_group 'Services', 'app/services'
+    add_group 'Serializers', 'app/serializers'
+  end
 end