diff --git a/src/Ben.Demystifier/Ben.Demystifier.csproj b/src/Ben.Demystifier/Ben.Demystifier.csproj
index 9a09d92..f859a17 100644
--- a/src/Ben.Demystifier/Ben.Demystifier.csproj
+++ b/src/Ben.Demystifier/Ben.Demystifier.csproj
@@ -5,7 +5,8 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <Nullable>enable</Nullable>
         <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>netstandard2.0</TargetFramework>
+        <LangVersion>10</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/src/Ben.Demystifier/EnhancedStackTrace.cs b/src/Ben.Demystifier/EnhancedStackTrace.cs
index c4e13f9..a076472 100644
--- a/src/Ben.Demystifier/EnhancedStackTrace.cs
+++ b/src/Ben.Demystifier/EnhancedStackTrace.cs
@@ -64,7 +64,7 @@ public partial class EnhancedStackTrace : StackTrace, IEnumerable<EnhancedStackF
             if (!string.IsNullOrEmpty(fileName))
             {
                 sb.Append(" in ");
-                sb.Append(TryGetFullPath(fileName));
+                sb.Append(TryGetFullPath(fileName!));
             }
 
             var lineNo = frame.GetFileLineNumber();
diff --git a/src/Ben.Demystifier/Internal/ReflectionHelper.cs b/src/Ben.Demystifier/Internal/ReflectionHelper.cs
index 6e11b5a..02731e8 100644
--- a/src/Ben.Demystifier/Internal/ReflectionHelper.cs
+++ b/src/Ben.Demystifier/Internal/ReflectionHelper.cs
@@ -46,7 +46,7 @@ public static class ReflectionHelper
     {
         Debug.Assert(attribute.IsTupleElementNameAttribute());
 
-        var propertyInfo = GetTransformNamesPropertyInfo(attribute.GetType());
+        var propertyInfo = GetTransformNamesPropertyInfo(attribute.GetType())!;
         return propertyInfo.GetValue(attribute) as IList<string>;
     }
 
@@ -55,6 +55,6 @@ public static class ReflectionHelper
 #pragma warning disable 8634
         return LazyInitializer.EnsureInitialized(ref transformerNamesLazyPropertyInfo,
 #pragma warning restore 8634
-            () => attributeType.GetProperty("TransformNames", BindingFlags.Instance | BindingFlags.Public)!);
+            () => attributeType.GetProperty("TransformNames", BindingFlags.Instance | BindingFlags.Public)!)!;
     }
 }
\ No newline at end of file