diff --git a/Source/IGListKit/IGListAdapter.h b/Source/IGListKit/IGListAdapter.h
index 1d702ec00..1e00d190e 100644
--- a/Source/IGListKit/IGListAdapter.h
+++ b/Source/IGListKit/IGListAdapter.h
@@ -44,6 +44,7 @@ typedef void (^IGListUpdaterCompletion)(BOOL finished);
  controllers in a collection view.
  */
 IGLK_SUBCLASSING_RESTRICTED
+NS_SWIFT_UI_ACTOR
 NS_SWIFT_NAME(ListAdapter)
 @interface IGListAdapter : NSObject
 
diff --git a/Source/IGListKit/IGListAdapterUpdater.h b/Source/IGListKit/IGListAdapterUpdater.h
index b0e189f7b..1990120bf 100644
--- a/Source/IGListKit/IGListAdapterUpdater.h
+++ b/Source/IGListKit/IGListAdapterUpdater.h
@@ -28,6 +28,7 @@ NS_ASSUME_NONNULL_BEGIN
  `-performUpdateWithCollectionView:fromObjects:toObjects:completion:`.
  */
 IGLK_SUBCLASSING_RESTRICTED
+NS_SWIFT_UI_ACTOR
 NS_SWIFT_NAME(ListAdapterUpdater)
 @interface IGListAdapterUpdater : NSObject <IGListUpdatingDelegate>
 
diff --git a/Source/IGListKit/IGListBindable.h b/Source/IGListKit/IGListBindable.h
index ec7dd0eba..a4da588e2 100644
--- a/Source/IGListKit/IGListBindable.h
+++ b/Source/IGListKit/IGListBindable.h
@@ -12,6 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  A protocol for cells that configure themselves given a view model.
  */
+NS_SWIFT_UI_ACTOR
 NS_SWIFT_NAME(ListBindable)
 @protocol IGListBindable <NSObject>
 
diff --git a/Source/IGListKit/IGListDisplayDelegate.h b/Source/IGListKit/IGListDisplayDelegate.h
index 26325fc38..f7d303aad 100644
--- a/Source/IGListKit/IGListDisplayDelegate.h
+++ b/Source/IGListKit/IGListDisplayDelegate.h
@@ -17,6 +17,7 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  Implement this protocol to receive display events for a section controller when it is on screen.
  */
+NS_SWIFT_UI_ACTOR
 NS_SWIFT_NAME(ListDisplayDelegate)
 @protocol IGListDisplayDelegate <NSObject>
 
diff --git a/Source/IGListKit/IGListSectionController.h b/Source/IGListKit/IGListSectionController.h
index fc783ffed..a6e74ff21 100644
--- a/Source/IGListKit/IGListSectionController.h
+++ b/Source/IGListKit/IGListSectionController.h
@@ -19,6 +19,7 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  The base class for section controllers used in a list. This class is intended to be subclassed.
  */
+NS_SWIFT_UI_ACTOR
 NS_SWIFT_NAME(ListSectionController)
 @interface IGListSectionController : NSObject