diff --git a/docs/articles/nunit/V5BreakingChanges.md b/docs/articles/nunit/V5BreakingChanges.md
index 208720b3f..d8714bb56 100644
--- a/docs/articles/nunit/V5BreakingChanges.md
+++ b/docs/articles/nunit/V5BreakingChanges.md
@@ -127,6 +127,25 @@ Issue [#3669](https://github.com/nunit/nunit/issues/3669)
 | `NETCore`         | modern .NET    | modern .NET    |
 | `DotNETCore`      | modern .NET    | modern .NET    |
 
+### Has.One.Matches changed predicate type to nullable.
+
+Issue [#5453](https://github.com/nunit/nunit/issues/5453)
+
+* **Why:** Aligning actual and expected type at compile-time, as lists can still have null values in them in certain cases.
+* **What changed:** Has.One.Matches changed predicate type to nullable. This breaks build if nullable-warnings are treated as errors. `<WarningsAsErrors>nullable</WarningsAsErrors>`
+* **What to do:** Predicates need to be change to handle potentially null-values:
+
+```csharp
+List<string> testList = ["hello", "world"];
+// NUnit 4
+Assert.That(testList, Has.One.Matches<string>(word => word.Length == 5));
+
+// NUnit 4
+Assert.That(testList, Has.One.Matches<string>(word => word?.Length == 5)); //Safe-Navigation
+// or
+Assert.That(testList, Has.One.Matches<string>(word => word!.Length == 5)); //Null-Forgiving
+```
+
 ## Platform changes
 
 ### .NET 6 target removed
diff --git a/docs/articles/nunit/release-notes/framework.md b/docs/articles/nunit/release-notes/framework.md
index bf03a48d5..9aef68aa1 100644
--- a/docs/articles/nunit/release-notes/framework.md
+++ b/docs/articles/nunit/release-notes/framework.md
@@ -87,6 +87,7 @@ There are in total 48 issues fixed in this release.
 
 ### The following issues are marked as breaking changes
 
+* [5453](https://github.com/nunit/nunit/issues/5453) Has.One.Matches changed predicate type to nullable. (only if nullable-warnings are treated as errors)
 * [5373](https://github.com/nunit/nunit/issues/5373) Eliminate forced stop from the API. Thanks to NUnit Team member [Manfred Brands](https://github.com/manfred-brands) for [PR 5374](https://github.com/nunit/nunit/pull/5374)
 * [5367](https://github.com/nunit/nunit/issues/5367) Eliminate StopRun(bool) method from .NET Core builds. Thanks to [CharliePoole](https://github.com/CharliePoole) for [PR 5369](https://github.com/nunit/nunit/pull/5369)
 * [5323](https://github.com/nunit/nunit/issues/5323) Report compiler error when asserting non-attribute in `Has.Attribute&lt;T&gt;()`. Thanks to NUnit Team member [Steven Weerdenburg](https://github.com/stevenaw) for [PR 5322](https://github.com/nunit/nunit/pull/5322)