diff --git a/en/appendices/5-1-migration-guide.rst b/en/appendices/5-1-migration-guide.rst
index e0d29f09c1..90295ca8e3 100644
--- a/en/appendices/5-1-migration-guide.rst
+++ b/en/appendices/5-1-migration-guide.rst
@@ -8,7 +8,7 @@ removed in 6.0.0.
 Behavior Changes
 ================
 
-- Connection now creats unique read and write drivers if the keys ``read`` or 
+- Connection now creats unique read and write drivers if the keys ``read`` or
   ``write`` are present in the config regardless of values.
 - FormHelper no longer generates ``aria-required`` attributes on input elements
   that also have the ``required`` attribute set. The ``aria-required`` attribute
@@ -107,6 +107,11 @@ TestSuite
 - ``LogTestTrait`` was added. This new trait makes it easy to capture logs in
   your tests and make assertions on the presence or absence of log messages.
 
+Utility
+-------
+
+- ``Hash::insert()`` and ``Hash::remove()`` now accept ``ArrayAccess`` objects along with ``array`` data.
+
 Validation
 ----------