diff --git a/lib/packwerk/folder_privacy/checker.rb b/lib/packwerk/folder_privacy/checker.rb
index b3c0afe..a5d9005 100644
--- a/lib/packwerk/folder_privacy/checker.rb
+++ b/lib/packwerk/folder_privacy/checker.rb
@@ -1,6 +1,7 @@
 # typed: strict
 # frozen_string_literal: true
 
+require 'sorbet-runtime'
 require 'packwerk/folder_privacy/package'
 require 'packwerk/folder_privacy/validator'
 
diff --git a/lib/packwerk/layer/checker.rb b/lib/packwerk/layer/checker.rb
index f691349..86cb5b7 100644
--- a/lib/packwerk/layer/checker.rb
+++ b/lib/packwerk/layer/checker.rb
@@ -1,6 +1,7 @@
 # typed: strict
 # frozen_string_literal: true
 
+require 'sorbet-runtime'
 require 'packwerk/layer/config'
 require 'packwerk/layer/layers'
 require 'packwerk/layer/package'
diff --git a/lib/packwerk/privacy/checker.rb b/lib/packwerk/privacy/checker.rb
index a7f4340..2ec8bfa 100644
--- a/lib/packwerk/privacy/checker.rb
+++ b/lib/packwerk/privacy/checker.rb
@@ -1,6 +1,7 @@
 # typed: strict
 # frozen_string_literal: true
 
+require 'sorbet-runtime'
 require 'packwerk/privacy/package'
 require 'packwerk/privacy/validator'
 
diff --git a/lib/packwerk/visibility/checker.rb b/lib/packwerk/visibility/checker.rb
index 8d1de12..4c11237 100644
--- a/lib/packwerk/visibility/checker.rb
+++ b/lib/packwerk/visibility/checker.rb
@@ -1,6 +1,7 @@
 # typed: strict
 # frozen_string_literal: true
 
+require 'sorbet-runtime'
 require 'packwerk/visibility/package'
 require 'packwerk/visibility/validator'