diff --git a/types/scriptable-ios/index.d.ts b/types/scriptable-ios/index.d.ts
index fd445b9a1456ba..3dba08dca468d6 100644
--- a/types/scriptable-ios/index.d.ts
+++ b/types/scriptable-ios/index.d.ts
@@ -6077,12 +6077,14 @@ declare class UITableRow {
     /**
      * _Called when the row is selected._
      *
-     * Called when the row is selected when the table is presented. If this has no value, the row cannot be selected. Defaults to null.
+     * Called when the row is selected when the table is presented. If this has no value, the row cannot be selected. Defaults to `undefined`.
+     *
+     * The `index` parameter starts from 1.
      *
      * Rows cannot be tapped when the tables is presented in Siri.
      * @see https://docs.scriptable.app/uitablerow/#onselect
      */
-    onSelect: () => void;
+    onSelect: ((index: number) => void) | undefined;
 }
 
 /**
diff --git a/types/scriptable-ios/scriptable-ios-tests.ts b/types/scriptable-ios/scriptable-ios-tests.ts
index 89cc909cc23506..35d588c2dde0b8 100644
--- a/types/scriptable-ios/scriptable-ios-tests.ts
+++ b/types/scriptable-ios/scriptable-ios-tests.ts
@@ -1031,7 +1031,9 @@
 }
 
 {
-    // TODO: UITableRow
+    const row = new UITableRow();
+    // $ExpectType ((index: number) => void) | undefined
+    row.onSelect;
 }
 
 {