diff --git a/README.md b/README.md
index ca3d648..02f1f4e 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,11 @@
 [![Tests](https://github.com/jeromegamez/typed-collection/actions/workflows/tests.yml/badge.svg)](https://github.com/jeromegamez/typed-collection/actions/workflows/tests.yml)
 [![Sponsor](https://img.shields.io/static/v1?logo=GitHub&label=Sponsor&message=%E2%9D%A4&color=ff69b4)](https://github.com/sponsors/jeromegamez)
 
+> [!NOTE]  
+> Laravel 11 added the `ensure()` collection method that verifies that all elements of
+> a collection are of a given type or list of types. However, this verification does not
+> prevent items of different types to be added at a later time.
+
 ## Installation
 
 The package can be installed with [Composer]: