diff --git a/DataSourceKit/CollectionViewDataSource.swift b/DataSourceKit/CollectionViewDataSource.swift
index 32f820c..d84aa50 100644
--- a/DataSourceKit/CollectionViewDataSource.swift
+++ b/DataSourceKit/CollectionViewDataSource.swift
@@ -36,3 +36,11 @@ public class CollectionViewDataSource<CellDeclaration>: NSObject, UICollectionVi
         return cell
     }
 }
+
+extension CollectionViewDataSource where CellDeclaration == CellBinder {
+    // Add meaningless parameter to avoid error `Members of constrained extensions
+    // cannot be declared @objc`, which is caused by collision to init() of NSObject.
+    public convenience init(_ declarationType: CellDeclaration.Type) {
+        self.init(binderFromDeclaration: { $0 })
+    }
+}
diff --git a/DataSourceKit/TableViewDataSource.swift b/DataSourceKit/TableViewDataSource.swift
index 2c94d21..44d40a4 100644
--- a/DataSourceKit/TableViewDataSource.swift
+++ b/DataSourceKit/TableViewDataSource.swift
@@ -36,3 +36,11 @@ public class TableViewDataSource<CellDeclaration>: NSObject, UITableViewDataSour
         return cell
     }
 }
+
+extension TableViewDataSource where CellDeclaration == CellBinder {
+    // Add meaningless parameter to avoid error `Members of constrained extensions
+    // cannot be declared @objc`, which is caused by collision to init() of NSObject.
+    public convenience init(_ declarationType: CellDeclaration.Type) {
+        self.init(binderFromDeclaration: { $0 })
+    }
+}