diff --git a/config/default.yml b/config/default.yml
index c139de0..44df4ff 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -3,7 +3,7 @@ Overhaul/MutableReformDefaults:
   Description: Detect usage of mutable defaults within Reform objects defaults.
   Enabled: true
   Include:
-    app/concepts/**/*.rb
+    - app/concepts/**/*.rb
   VersionAdded: '0.0.1'
 Overhaul/AssignmentInsteadOfComparison:
   Description: Detect enumerable comparison blocks returning an assignment.
diff --git a/rubocop-overhaul.gemspec b/rubocop-overhaul.gemspec
index 1377d7d..1c47b4b 100644
--- a/rubocop-overhaul.gemspec
+++ b/rubocop-overhaul.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
     "rubygems_mfa_required" => "true"
   }
 
-  spec.files = Dir["lib/**/*"] + Dir["oh_defaults/*"]
+  spec.files = Dir["{lib,config,oh_defaults}/**/*"]
 
   spec.add_dependency "rubocop", "~> 1.33"
 end