diff --git a/src/Umbraco.Core/Configuration/Models/DeliveryApiSettings.cs b/src/Umbraco.Core/Configuration/Models/DeliveryApiSettings.cs
index b1944dad5f..797a055912 100644
--- a/src/Umbraco.Core/Configuration/Models/DeliveryApiSettings.cs
+++ b/src/Umbraco.Core/Configuration/Models/DeliveryApiSettings.cs
@@ -144,7 +144,7 @@ public class DeliveryApiSettings
         /// <value>
         /// The URLs allowed as redirect targets.
         /// </value>
-        public ISet<Uri> LoginRedirectUrls { get; set; } = new HashSet<Uri>();
+        public IEnumerable<Uri> LoginRedirectUrls { get; set; } = [];
 
         /// <summary>
         ///     Gets or sets the URLs allowed to use as redirect targets after a successful logout (session termination).
@@ -155,7 +155,7 @@ public class DeliveryApiSettings
         /// <remarks>
         /// These are only required if logout is to be used.
         /// </remarks>
-        public ISet<Uri> LogoutRedirectUrls { get; set; } = new HashSet<Uri>();
+        public IEnumerable<Uri> LogoutRedirectUrls { get; set; } = [];
     }
 
     /// <summary>
diff --git a/src/Umbraco.Core/Configuration/Models/RequestHandlerSettings.cs b/src/Umbraco.Core/Configuration/Models/RequestHandlerSettings.cs
index d4e7f66c81..0383f1a87c 100644
--- a/src/Umbraco.Core/Configuration/Models/RequestHandlerSettings.cs
+++ b/src/Umbraco.Core/Configuration/Models/RequestHandlerSettings.cs
@@ -98,5 +98,5 @@ public class RequestHandlerSettings
     /// <summary>
     ///     Add additional character replacements, or override defaults
     /// </summary>
-    public ISet<CharItem> UserDefinedCharCollection { get; set; } = new HashSet<CharItem>();
+    public IEnumerable<CharItem> UserDefinedCharCollection { get; set; } = [];
 }
diff --git a/tests/Umbraco.Tests.UnitTests/Umbraco.Core/Configuration/Models/RequestHandlerSettingsTests.cs b/tests/Umbraco.Tests.UnitTests/Umbraco.Core/Configuration/Models/RequestHandlerSettingsTests.cs
index 0bf9ed2971..44b953500a 100644
--- a/tests/Umbraco.Tests.UnitTests/Umbraco.Core/Configuration/Models/RequestHandlerSettingsTests.cs
+++ b/tests/Umbraco.Tests.UnitTests/Umbraco.Core/Configuration/Models/RequestHandlerSettingsTests.cs
@@ -1,4 +1,3 @@
-using System.Linq;
 using NUnit.Framework;
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Extensions;
@@ -14,10 +13,10 @@ public class RequestHandlerSettingsTests
         var settings = new RequestHandlerSettings
         {
             UserDefinedCharCollection =
-            {
+            [
                 new() { Char = "test", Replacement = "replace" },
                 new() { Char = "test2", Replacement = "replace2" },
-            }
+            ]
         };
         var actual = settings.GetCharReplacements().ToList();
 
@@ -34,15 +33,15 @@ public class RequestHandlerSettingsTests
         var settings = new RequestHandlerSettings
         {
             UserDefinedCharCollection =
-            {
+            [
                 new() { Char = "test", Replacement = "replace" },
                 new() { Char = "test2", Replacement = "replace2" },
-            },
+            ],
             EnableDefaultCharReplacements = false,
         };
         var actual = settings.GetCharReplacements().ToList();
 
-        Assert.AreEqual(settings.UserDefinedCharCollection.Count, actual.Count);
+        Assert.AreEqual(settings.UserDefinedCharCollection.Count(), actual.Count);
         Assert.That(actual, Is.EquivalentTo(settings.UserDefinedCharCollection));
     }
 
@@ -52,10 +51,10 @@ public class RequestHandlerSettingsTests
         var settings = new RequestHandlerSettings
         {
             UserDefinedCharCollection =
-            {
+            [
                 new() { Char = "%", Replacement = "percent" },
                 new() { Char = ".", Replacement = "dot" },
-            }
+            ]
         };
         var actual = settings.GetCharReplacements().ToList();
 
@@ -73,11 +72,11 @@ public class RequestHandlerSettingsTests
         var settings = new RequestHandlerSettings
         {
             UserDefinedCharCollection =
-            {
+            [
                 new() { Char = "%", Replacement = "percent" },
                 new() { Char = ".", Replacement = "dot" },
                 new() { Char = "new", Replacement = "new" },
-            }
+            ]
         };
         var actual = settings.GetCharReplacements().ToList();