diff --git a/JsonHelper.Net.Test/JTokenExtensionsTests.cs b/JsonHelper.Net.Test/JTokenExtensionsTests.cs
index 9c6d70c..bc39dfa 100644
--- a/JsonHelper.Net.Test/JTokenExtensionsTests.cs
+++ b/JsonHelper.Net.Test/JTokenExtensionsTests.cs
@@ -18,7 +18,7 @@ public async Task SelectStringTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(result);
             Assert.That(result, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectStringOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectStringOrThrow(path)));
         }
     }
     /// <summary>
@@ -36,7 +36,7 @@ public async Task SelectBooleanTest(string json, string path, bool? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectBooleanOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectBooleanOrThrow(path)));
         }
     }
     /// <summary>
@@ -54,7 +54,7 @@ public async Task SelectIntegerTest(string json, string path, int? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectIntOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectIntOrThrow(path)));
         }
     }
     /// <summary>
@@ -72,7 +72,7 @@ public async Task SelectFloatTest(string json, string path, float? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectFloatOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectFloatOrThrow(path)));
         }
     }
     /// <summary>
@@ -129,7 +129,7 @@ public async Task SelectDateTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(dateISO);
             Assert.That(dateISO, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectDateOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectDateOrThrow(path)));
         }
     }
     /// <summary>
@@ -149,7 +149,7 @@ public async Task SelectGuidTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(guidString);
             Assert.That(guidString, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectGuidOrThrow(path));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectGuidOrThrow(path)));
         }
     }
     /// <summary>
@@ -169,7 +169,7 @@ public async Task SelectDateWithFormatTest(string json, string path, string form
             await Console.Out.WriteLineAsync(dateISO);
             Assert.That(dateISO, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectDateOrThrow(path, format));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectDateOrThrow(path, format)));
         }
     }
     /// <summary>
@@ -185,7 +185,7 @@ public async Task SelectObjectTest(string json, string path, bool expectedNull)
         if (expectedNull == false) {
             jtoken.SelectOrThrow(path, JTokenType.Object);
         } else {
-            Assert.Throws<JsonHelperException>(() => jtoken.SelectOrThrow(path, JTokenType.Object));
+            Assert.Throws<JsonHelperException>((Action)(() => jtoken.SelectOrThrow(path, JTokenType.Object)));
         }
     }
 }
diff --git a/JsonHelper.Net.Test/JsonHelper.Net.Test.csproj b/JsonHelper.Net.Test/JsonHelper.Net.Test.csproj
index 5cc19ef..cce1629 100644
--- a/JsonHelper.Net.Test/JsonHelper.Net.Test.csproj
+++ b/JsonHelper.Net.Test/JsonHelper.Net.Test.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
-    <PackageReference Include="NUnit" Version="4.4.0" />
+    <PackageReference Include="NUnit" Version="4.6.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.14.0" />
     <PackageReference Include="coverlet.collector" Version="10.0.1" />
diff --git a/JsonHelper.Net.Test/JsonHelperTests.cs b/JsonHelper.Net.Test/JsonHelperTests.cs
index c4b645b..cee4c2e 100644
--- a/JsonHelper.Net.Test/JsonHelperTests.cs
+++ b/JsonHelper.Net.Test/JsonHelperTests.cs
@@ -20,7 +20,7 @@ public async Task SelectStringTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(result);
             Assert.That(result, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectStringOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectStringOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -38,7 +38,7 @@ public async Task SelectBooleanTest(string json, string path, bool? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectBooleanOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectBooleanOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -56,7 +56,7 @@ public async Task SelectIntegerTest(string json, string path, int? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectIntOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectIntOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -74,7 +74,7 @@ public async Task SelectFloatTest(string json, string path, float? expected) {
             await Console.Out.WriteLineAsync(result.ToString());
             Assert.That(result, Is.EqualTo(expected.Value));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectFloatOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectFloatOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -131,7 +131,7 @@ public async Task SelectDateTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(dateISO);
             Assert.That(dateISO, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectDateOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectDateOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -151,7 +151,7 @@ public async Task SelectGuidTest(string json, string path, string? expected) {
             await Console.Out.WriteLineAsync(guidString);
             Assert.That(guidString, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectGuidOrThrow(json, path));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectGuidOrThrow(json, path)));
         }
     }
     /// <summary>
@@ -170,7 +170,7 @@ public async Task SelectDateWithFormatTest(string json, string path, string form
             await Console.Out.WriteLineAsync(dateIso);
             Assert.That(dateIso, Is.EqualTo(expected));
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectDateOrThrow(jtoken, path, format));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectDateOrThrow(jtoken, path, format)));
         }
     }
     /// <summary>
@@ -186,7 +186,7 @@ public async Task SelectObjectTest(string json, string path, bool expectedNull)
             var jtoken = JToken.Parse(json);
             JsonHelper.SelectOrThrow(jtoken, path, JTokenType.Object);
         } else {
-            Assert.Throws<JsonHelperException>(() => JsonHelper.SelectOrThrow(json, path, JTokenType.Object));
+            Assert.Throws<JsonHelperException>((Action)(() => JsonHelper.SelectOrThrow(json, path, JTokenType.Object)));
         }
     }
 }
\ No newline at end of file