diff --git a/.idea/.idea.yTools/.idea/projectSettingsUpdater.xml b/.idea/.idea.yTools/.idea/projectSettingsUpdater.xml
index 86cc6c6..ef20cb0 100644
--- a/.idea/.idea.yTools/.idea/projectSettingsUpdater.xml
+++ b/.idea/.idea.yTools/.idea/projectSettingsUpdater.xml
@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="RiderProjectSettingsUpdater">
+    <option name="singleClickDiffPreview" value="1" />
+    <option name="unhandledExceptionsIgnoreList" value="1" />
     <option name="vcsConfiguration" value="3" />
   </component>
 </project>
\ No newline at end of file
diff --git a/yTools.ConsoleTryout/yTools.ConsoleApp.csproj b/yTools.ConsoleTryout/yTools.ConsoleApp.csproj
index 93dab33..9b17cd2 100644
--- a/yTools.ConsoleTryout/yTools.ConsoleApp.csproj
+++ b/yTools.ConsoleTryout/yTools.ConsoleApp.csproj
@@ -5,7 +5,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <ReleaseVersion>0.2.2</ReleaseVersion>
-    <TargetFrameworks>net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net7.0;net8.0;net9.0</TargetFrameworks>
+    <RollForward>LatestMajor</RollForward>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/yTools.Tests/SerializationTests.cs b/yTools.Tests/SerializationTests.cs
index dd2b52b..74956be 100644
--- a/yTools.Tests/SerializationTests.cs
+++ b/yTools.Tests/SerializationTests.cs
@@ -1,20 +1,29 @@
 namespace yTools.Tests
 {
     [TestClass]
-	public class SerializationTests
+    public class SerializationTests
     {
         private readonly char _sep = General.PathSeparator;
-        
+
         [TestCleanup]
         public void Cleanup()
         {
-            const string testDirectory = "yTools";
-
-            var fullDir = $"{Environment.GetFolderPath(
-                Environment.SpecialFolder.LocalApplicationData
-            )}{_sep}{testDirectory}";
-            if (Directory.Exists(fullDir))
-                Directory.Delete(fullDir, true);
+          try
+          {
+              const string testDirectory = "yTools";
+              var fullDir = $"{Environment.GetFolderPath(
+                  Environment.SpecialFolder.LocalApplicationData
+              )}{_sep}{testDirectory}";
+              if (Directory.Exists(fullDir))
+                  Directory.Delete(fullDir, true);
+
+              if (Directory.Exists("./test-serialization"))
+                  Directory.Delete("./test-serialization", true);
+          }
+          catch
+          {
+              Console.WriteLine("Something went wrong when cleaning up.");
+          }
         }
 
         [TestMethod]
@@ -24,14 +33,7 @@ public void CheckObjectsJsonSerialized()
             TestSerializationObject testObject2 = new("Good Morning.", -8485, -6498.948);
 
             JsonSerializer serializer = new();
-
-            var directory = $"yTools{_sep}Tests{_sep}Serialization";
-            serializer.SetSerializationDirectoryInLocalAppData(directory);
-            
-            Assert.IsTrue(Directory.Exists(
-                $"{Environment.GetFolderPath(
-                    Environment.SpecialFolder.LocalApplicationData
-                )}{_sep}{directory}"));
+            serializer.SetSerializationDirectory("./test-serialization");
 
             bool serialized = serializer.SerializeInDefault("testObject1.json", testObject1, out Exception? exception, out _);
             if (!serialized && exception != null) throw exception;
@@ -56,14 +58,7 @@ public void CheckObjectsXmlSerialized()
             TestSerializationObject testObject2 = new("Good Morning.", -8485, -6498.948);
 
             XmlSerializer serializer = new();
-
-            var directory = $"yTools{_sep}Tests{_sep}Serialization";
-            serializer.SetSerializationDirectoryInLocalAppData(directory);
-            
-            Assert.IsTrue(Directory.Exists(
-                $"{Environment.GetFolderPath(
-                    Environment.SpecialFolder.LocalApplicationData
-                )}{_sep}{directory}"));
+            serializer.SetSerializationDirectory("./test-serialization");
 
             bool serialized = serializer.SerializeInDefault("testObject1.xml", testObject1, out Exception? exception, out _);
             if (!serialized && exception != null) throw exception;
@@ -92,7 +87,7 @@ public void CheckSerializationDirCreated()
 
             jsonSerializer.Serialize(testObj, "json.json", $@"{baseDir}{_sep}json", out _, out _);
             Assert.IsTrue(Directory.Exists($"{baseDir}{_sep}json"));
-            
+
             xmlSerializer.Serialize(testObj, "xml.xml", $@"{baseDir}{_sep}xml", out _, out _);
             Assert.IsTrue(Directory.Exists($"{baseDir}{_sep}xml"));
         }
@@ -131,4 +126,4 @@ public void CheckSerializeException()
             Console.WriteLine($"Type of XML exception: {ex.GetType()}");
         }
     }
-}
\ No newline at end of file
+}
diff --git a/yTools.Tests/yTools.Tests.csproj b/yTools.Tests/yTools.Tests.csproj
index 9ef7f05..7037a0b 100644
--- a/yTools.Tests/yTools.Tests.csproj
+++ b/yTools.Tests/yTools.Tests.csproj
@@ -7,7 +7,8 @@
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
     <ReleaseVersion>0.2.2</ReleaseVersion>
-    <TargetFrameworks>net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net7.0;net8.0;net9.0</TargetFrameworks>
+    <RollForward>LatestMajor</RollForward>
   </PropertyGroup>
 
   <ItemGroup>