diff --git a/src/Serilog.Expressions/Expressions/Compilation/Linq/Intrinsics.cs b/src/Serilog.Expressions/Expressions/Compilation/Linq/Intrinsics.cs
index 17ad067..47f6e8b 100644
--- a/src/Serilog.Expressions/Expressions/Compilation/Linq/Intrinsics.cs
+++ b/src/Serilog.Expressions/Expressions/Compilation/Linq/Intrinsics.cs
@@ -20,7 +20,6 @@
 using System.Text.RegularExpressions;
 using Serilog.Events;
 using Serilog.Expressions.Runtime;
-using Serilog.Formatting.Display;
 using Serilog.Parsing;
 using Serilog.Templates.Compilation;
 
@@ -32,7 +31,7 @@ static class Intrinsics
     {
         static readonly LogEventPropertyValue NegativeOne = new ScalarValue(-1);
         static readonly LogEventPropertyValue Tombstone = new ScalarValue("😬 (if you see this you have found a bug.)");
-        
+
         public static List<LogEventPropertyValue?> CollectSequenceElements(LogEventPropertyValue?[] elements)
         {
             return elements.ToList();
@@ -53,7 +52,7 @@ static class Intrinsics
             if (content is SequenceValue sequence)
                 foreach (var element in sequence.Elements)
                     elements.Add(element);
-            
+
             return elements;
         }
 
@@ -61,10 +60,10 @@ public static LogEventPropertyValue ConstructSequenceValue(List<LogEventProperty
         {
             if (elements.Any(el => el == null))
                 return new SequenceValue(elements.Where(el => el != null));
-            
+
             return new SequenceValue(elements);
         }
-        
+
         public static List<LogEventProperty> CollectStructureProperties(string[] names, LogEventPropertyValue?[] values)
         {
             var properties = new List<LogEventProperty>();
@@ -85,7 +84,7 @@ public static LogEventPropertyValue ConstructStructureValue(List<LogEventPropert
 
             return new StructureValue(properties);
         }
-        
+
         public static List<LogEventProperty> ExtendStructureValueWithSpread(
             List<LogEventProperty> properties,
             LogEventPropertyValue? content)
@@ -99,7 +98,7 @@ public static List<LogEventProperty> ExtendStructureValueWithSpread(
 
             return properties;
         }
-        
+
         public static List<LogEventProperty> ExtendStructureValueWithProperty(
             List<LogEventProperty> properties,
             string name,
@@ -129,7 +128,7 @@ public static bool CoerceToScalarBoolean(LogEventPropertyValue value)
                 return b;
             return false;
         }
-        
+
         public static LogEventPropertyValue? IndexOfMatch(LogEventPropertyValue value, Regex regex)
         {
             if (value is ScalarValue scalar &&
@@ -193,9 +192,9 @@ public static string RenderMessage(CompiledMessageToken formatter, EvaluationCon
                 if (token is PropertyToken {Format: { }} pt)
                 {
                     elements ??= new List<LogEventPropertyValue>();
-                    
+
                     var space = new StringWriter();
-                  
+
                     pt.Render(logEvent.Properties, space, formatProvider);
                     elements.Add(new ScalarValue(space.ToString()));
                 }
diff --git a/src/Serilog.Expressions/Templates/ExpressionTemplate.cs b/src/Serilog.Expressions/Templates/ExpressionTemplate.cs
index b463545..6987db8 100644
--- a/src/Serilog.Expressions/Templates/ExpressionTemplate.cs
+++ b/src/Serilog.Expressions/Templates/ExpressionTemplate.cs
@@ -17,7 +17,6 @@
 using System.IO;
 using Serilog.Events;
 using Serilog.Expressions;
-using Serilog.Expressions.Compilation;
 using Serilog.Formatting;
 using Serilog.Templates.Compilation;
 using Serilog.Templates.Compilation.NameResolution;
@@ -32,7 +31,7 @@ namespace Serilog.Templates
     public class ExpressionTemplate : ITextFormatter
     {
         readonly CompiledTemplate _compiled;
-        
+
         /// <summary>
         /// Construct an <see cref="ExpressionTemplate"/>.
         /// </summary>
@@ -89,10 +88,10 @@ public static bool TryParse(
                     formatProvider,
                     TemplateFunctionNameResolver.Build(nameResolver, planned),
                     SelectTheme(theme, applyThemeWhenOutputIsRedirected)));
-            
+
             return true;
         }
-        
+
         ExpressionTemplate(CompiledTemplate compiled)
         {
             _compiled = compiled;
@@ -121,9 +120,9 @@ public ExpressionTemplate(
             var templateParser = new TemplateParser();
             if (!templateParser.TryParse(template, out var parsed, out var error))
                 throw new ArgumentException(error);
-            
+
             var planned = TemplateLocalNameBinder.BindLocalValueNames(parsed);
-            
+
             _compiled = TemplateCompiler.Compile(
                 planned,
                 formatProvider,
diff --git a/test/Serilog.Expressions.PerformanceTests/Serilog.Expressions.PerformanceTests.csproj b/test/Serilog.Expressions.PerformanceTests/Serilog.Expressions.PerformanceTests.csproj
index 3f0032d..db09896 100644
--- a/test/Serilog.Expressions.PerformanceTests/Serilog.Expressions.PerformanceTests.csproj
+++ b/test/Serilog.Expressions.PerformanceTests/Serilog.Expressions.PerformanceTests.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
     <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
   </PropertyGroup>
 
diff --git a/test/Serilog.Expressions.PerformanceTests/Support/NullSink.cs b/test/Serilog.Expressions.PerformanceTests/Support/NullSink.cs
deleted file mode 100644
index 88cb50a..0000000
--- a/test/Serilog.Expressions.PerformanceTests/Support/NullSink.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-using Serilog.Core;
-using Serilog.Events;
-
-namespace Serilog.Expressions.PerformanceTests.Support
-{
-    public class NullSink : ILogEventSink
-    {
-        public void Emit(LogEvent logEvent)
-        {
-        }
-    }
-}
diff --git a/test/Serilog.Expressions.Tests/ExpressionEvaluationTests.cs b/test/Serilog.Expressions.Tests/ExpressionEvaluationTests.cs
index b741159..69bc92a 100644
--- a/test/Serilog.Expressions.Tests/ExpressionEvaluationTests.cs
+++ b/test/Serilog.Expressions.Tests/ExpressionEvaluationTests.cs
@@ -1,8 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
-using System.IO;
-using System.Linq;
 using Serilog.Events;
 using Serilog.Expressions.Runtime;
 using Serilog.Expressions.Tests.Support;
diff --git a/test/Serilog.Expressions.Tests/Expressions/NameResolverTests.cs b/test/Serilog.Expressions.Tests/Expressions/NameResolverTests.cs
index edbf18a..d4c256a 100644
--- a/test/Serilog.Expressions.Tests/Expressions/NameResolverTests.cs
+++ b/test/Serilog.Expressions.Tests/Expressions/NameResolverTests.cs
@@ -5,8 +5,6 @@
 using Serilog.Expressions.Tests.Support;
 using Xunit;
 
-#nullable enable
-
 namespace Serilog.Expressions.Tests.Expressions
 {
     public class NameResolverTests
@@ -15,7 +13,7 @@ public class NameResolverTests
         {
             if (!Coerce.Numeric(number, out var num))
                 return null;
-            
+
             return new ScalarValue(num + 42);
         }
 
@@ -23,7 +21,7 @@ public class NameResolverTests
         {
             if (!Coerce.Numeric(index, out var i))
                 return null;
-            
+
             return new ScalarValue(word[(int)i].ToString());
         }
 
@@ -62,7 +60,7 @@ public void UserDefinedFunctionsAreCallableInExpressions()
                 nameResolver: new StaticMemberNameResolver(typeof(NameResolverTests)));
             Assert.True(Coerce.IsTrue(expr(Some.InformationEvent())));
         }
-        
+
         [Fact]
         public void UserDefinedFunctionsCanReceiveUserProvidedParameters()
         {