diff --git a/Source/Internal/IGListAdapterProxy.h b/Source/Internal/IGListAdapterProxy.h
index b1af43be..f74cb128 100644
--- a/Source/Internal/IGListAdapterProxy.h
+++ b/Source/Internal/IGListAdapterProxy.h
@@ -33,7 +33,17 @@ IGLK_SUBCLASSING_RESTRICTED
  */
 - (instancetype)initWithCollectionViewTarget:(nullable id<UICollectionViewDelegate>)collectionViewTarget
                             scrollViewTarget:(nullable id<UIScrollViewDelegate>)scrollViewTarget
-                                 interceptor:(IGListAdapter *)interceptor;
+                                 interceptor:(IGListAdapter *)interceptor NS_DESIGNATED_INITIALIZER;
+
+/**
+ :nodoc:
+ */
+- (instancetype)init NS_UNAVAILABLE;
+
+/**
+ :nodoc:
+ */
++ (instancetype)new NS_UNAVAILABLE;
 
 @end
 
diff --git a/Source/Internal/IGListSectionMap.h b/Source/Internal/IGListSectionMap.h
index bc5b5aaa..c5a3ab2c 100644
--- a/Source/Internal/IGListSectionMap.h
+++ b/Source/Internal/IGListSectionMap.h
@@ -107,6 +107,11 @@ IGLK_SUBCLASSING_RESTRICTED
  */
 - (instancetype)init NS_UNAVAILABLE;
 
+/**
+ :nodoc:
+ */
++ (instancetype)new NS_UNAVAILABLE;
+
 @end
 
 NS_ASSUME_NONNULL_END