diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 547d4b2..d664f1b 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -5,8 +5,9 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="MinVer" Version="5.0.0" />
-    <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0"/>
+    <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="MSTest" Version="3.5.0" />
     <PackageVersion Include="CppAst.CodeGen" Version="0.5.0-alpha-001" />
+    <PackageVersion Include="PolySharp" Version="1.14.1" />
   </ItemGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/SharpScss/LibSass.Generated.cs b/src/SharpScss/LibSass.Generated.cs
index ec31599..286c862 100644
--- a/src/SharpScss/LibSass.Generated.cs
+++ b/src/SharpScss/LibSass.Generated.cs
@@ -8,6 +8,8 @@
 //------------------------------------------------------------------------------
 using System;
 
+#pragma warning disable CS8981
+
 namespace SharpScss
 {
     using System.Runtime.InteropServices;
diff --git a/src/SharpScss/LibSass.cs b/src/SharpScss/LibSass.cs
index 66912d2..787e817 100644
--- a/src/SharpScss/LibSass.cs
+++ b/src/SharpScss/LibSass.cs
@@ -88,7 +88,7 @@ public StringUtf8(IntPtr pointer)
 
         public bool IsEmpty => pointer == IntPtr.Zero;
 
-        public static implicit operator string(StringUtf8 stringUtf8)
+        public static implicit operator string?(StringUtf8 stringUtf8)
         {
             if (stringUtf8.pointer != IntPtr.Zero)
             {
@@ -97,7 +97,7 @@ public static implicit operator string(StringUtf8 stringUtf8)
             return null;
         }
 
-        public static unsafe implicit operator StringUtf8(string text)
+        public static unsafe implicit operator StringUtf8(string? text)
         {
             if (text == null)
             {
@@ -138,7 +138,7 @@ public UTF8EncodingRelaxed() : base(false, false)
     internal abstract class SassAllocator
     {
         [ThreadStatic]
-        private static List<IntPtr> PointersToFree;
+        private static List<IntPtr>? PointersToFree;
 
         public static void FreeNative()
         {
diff --git a/src/SharpScss/Scss.cs b/src/SharpScss/Scss.cs
index 80682f2..d34630b 100644
--- a/src/SharpScss/Scss.cs
+++ b/src/SharpScss/Scss.cs
@@ -16,8 +16,8 @@ public static class Scss
 {
     // NOTE: It is important to keep allocated delegate importer function, so that it will not be garbage collected
     private static readonly LibSass.Sass_Importer_Fn ScssImporterLock;
-    private static string version;
-    private static string languageVersion;
+    private static string? version;
+    private static string? languageVersion;
     private static readonly ScssOptions DefaultOptions = new ScssOptions();
         
     static Scss()
@@ -31,7 +31,7 @@ static Scss()
     /// </summary>
     public static string Version
     {
-        get { return version = version ?? LibSass.libsass_version(); }
+        get { return version ??= LibSass.libsass_version(); }
     }
 
     /// <summary>
@@ -49,7 +49,7 @@ public static string LanguageVersion
     /// <param name="options">The options.</param>
     /// <returns>The result of the conversion</returns>
     /// <exception cref="System.ArgumentNullException">if scss is null</exception>
-    public static ScssResult ConvertToCss(string scss, ScssOptions options = null)
+    public static ScssResult ConvertToCss(string scss, ScssOptions? options = null)
     {
         if (scss == null) throw new ArgumentNullException(nameof(scss));
         return FromCore(scss, false, options);
@@ -62,7 +62,7 @@ public static ScssResult ConvertToCss(string scss, ScssOptions options = null)
     /// <param name="options">The options.</param>
     /// <returns>The result of the conversion</returns>
     /// <exception cref="System.ArgumentNullException">if scss is null</exception>
-    public static ScssResult ConvertFileToCss(string scssFile, ScssOptions options = null)
+    public static ScssResult ConvertFileToCss(string scssFile, ScssOptions? options = null)
     {
         if (scssFile == null) throw new ArgumentNullException(nameof(scssFile));
         return FromCore(scssFile, true, options);
@@ -75,7 +75,7 @@ public static ScssResult ConvertFileToCss(string scssFile, ScssOptions options =
     /// <param name="fromFile">if set to <c>true</c> <paramref name="fromStringOrFile"/> is a scss file; otherwise it is a scss content.</param>
     /// <param name="options">The options.</param>
     /// <returns>The result of the conversion</returns>
-    private static ScssResult FromCore(string fromStringOrFile, bool fromFile, ScssOptions options = null)
+    private static ScssResult FromCore(string fromStringOrFile, bool fromFile, ScssOptions? options = null)
     {
         var compiler = new LibSass.Sass_Compiler();
         GCHandle? tryImportHandle = null;
@@ -87,18 +87,15 @@ private static ScssResult FromCore(string fromStringOrFile, bool fromFile, ScssO
             {
                 var fileContext = LibSass.sass_make_file_context(fromStringOrFile);
                 context = fileContext;
-                if (options.InputFile == null)
-                {
-                    options.InputFile = fromStringOrFile;
-                }
-                tryImportHandle = MarshalOptions(fileContext, options);
+                var inputFile = options.InputFile ?? fromStringOrFile;
+                tryImportHandle = MarshalOptions(fileContext, options, inputFile);
                 compiler = LibSass.sass_make_file_compiler(fileContext);
             }
             else
             {
                 var dataContext = LibSass.sass_make_data_context(fromStringOrFile);
                 context = dataContext;
-                tryImportHandle = MarshalOptions(dataContext, options);
+                tryImportHandle = MarshalOptions(dataContext, options, options.InputFile);
                 compiler = LibSass.sass_make_data_compiler(dataContext);
             }
 
@@ -112,8 +109,8 @@ private static ScssResult FromCore(string fromStringOrFile, bool fromFile, ScssO
             var css = LibSass.sass_context_get_output_string(context);
 
             // Gets the map if it was enabled
-            string map = null;
-            if (options != null && options.GenerateSourceMap)
+            string? map = null;
+            if (options.GenerateSourceMap)
             {
                 map = LibSass.sass_context_get_source_map_string(context);
             }
@@ -154,20 +151,18 @@ private static ScssResult FromCore(string fromStringOrFile, bool fromFile, ScssO
         }
     }
 
-    private static unsafe List<string> GetIncludedFiles(LibSass.Sass_Context context)
+    private static unsafe List<string>? GetIncludedFiles(LibSass.Sass_Context context)
     {
         var filesCount = (int)LibSass.sass_context_get_included_files_size(context);
         var files = (LibSass.StringUtf8*)LibSass.sass_context_get_included_files(context);
-        List<string> list = null;
+        List<string>? list = null;
         for(int i = 0; i < filesCount; i++)
         { 
             if (!files->IsEmpty)
             {
-                if (list == null)
-                {
-                    list = new List<string>();
-                }
-                list.Add(*files);
+                list ??= new List<string>();
+                var fileAsString = (string)(*files)!;
+                list.Add(fileAsString);
             }
             files++;
         }
@@ -189,7 +184,7 @@ private static void CheckStatus(LibSass.Sass_Context context)
         }
     }
 
-    private static GCHandle? MarshalOptions(LibSass.Sass_Context context, ScssOptions options)
+    private static GCHandle? MarshalOptions(LibSass.Sass_Context context, ScssOptions options, string? inputFile)
     {
         var nativeOptions = LibSass.sass_context_get_options(context);
 
@@ -227,24 +222,17 @@ private static void CheckStatus(LibSass.Sass_Context context)
         {
             LibSass.sass_option_set_linefeed(nativeOptions, options.Linefeed);
         }
-        if (options.InputFile != null)
+        if (inputFile != null)
         {
-            var inputFile = GetRootedPath(options.InputFile);
+            inputFile = GetRootedPath(inputFile);
             LibSass.sass_option_set_input_path(nativeOptions, inputFile);
         }
-        string outputFile = null;
-        if (options.OutputFile != null)
+        string? outputFile = options.OutputFile;
+        if (outputFile != null)
         {
-            outputFile = GetRootedPath(options.OutputFile);
+            outputFile = GetRootedPath(outputFile);
             LibSass.sass_option_set_output_path(nativeOptions, outputFile);
         }
-        //if (options.PluginPaths.Count > 0)
-        //{
-        //    foreach (var path in options.PluginPaths)
-        //    {
-        //        LibSass.sass_option_push_plugin_path(nativeOptions, path);
-        //    }
-        //}
         if (options.IncludePaths.Count > 0)
         {
             foreach (var path in options.IncludePaths)
@@ -256,11 +244,6 @@ private static void CheckStatus(LibSass.Sass_Context context)
         if (options.GenerateSourceMap)
         {
             var sourceMapFile = GetRootedPath(options.SourceMapFile ?? (outputFile ?? "result.css") + ".map");
-            if (options.SourceMapFile == null)
-            {
-                options.SourceMapFile = sourceMapFile;
-            }
-
             LibSass.sass_option_set_source_map_file(nativeOptions, sourceMapFile);
         }
         if (options.SourceMapRoot != null)
@@ -284,19 +267,19 @@ private static unsafe LibSass.Sass_Import_List CustomScssImporter(string current
         string previousPath = LibSass.sass_import_get_abs_path(previous);
 
         var cookieHandle = GCHandle.FromIntPtr(cookie);
-        var tryImport = (ScssOptions.TryImportDelegate)cookieHandle.Target;
+        var tryImport = (ScssOptions.TryImportDelegate?)cookieHandle.Target;
 
         var file = (string)currentPath;
         var importList = LibSass.sass_make_import_list(1);
         uint line = 0;
         uint column = 0;
-        string errorMessage = null;
+        string? errorMessage = null;
         if (tryImport != null)
         {
             try
             {
                 string scss;
-                string map;
+                string? map;
                 if (tryImport(ref file, previousPath, out scss, out map))
                 {
                     var entry = LibSass.sass_make_import(currentPath, file, scss, map ?? "");
diff --git a/src/SharpScss/ScssOptions.cs b/src/SharpScss/ScssOptions.cs
index cf86bb2..a6403c1 100644
--- a/src/SharpScss/ScssOptions.cs
+++ b/src/SharpScss/ScssOptions.cs
@@ -19,7 +19,7 @@ public class ScssOptions
     /// <param name="scss">The output scss if import was found.</param>
     /// <param name="map">The output map if import was found. May be null</param>
     /// <returns><c>true</c> if import was found; <c>false</c> otherwise</returns>
-    public delegate bool TryImportDelegate(ref string file, string parentPath, out string scss, out string map);
+    public delegate bool TryImportDelegate(ref string file, string parentPath, out string scss, out string? map);
 
     /// <summary>
     /// Initializes a new instance of the <see cref="ScssOptions"/> class.
@@ -84,12 +84,12 @@ public ScssOptions()
     /// <summary>
     /// Gets or sets the indent string. Default is 2 spaces.
     /// </summary>
-    public string Indent { get; set; }
+    public string? Indent { get; set; }
 
     /// <summary>
     /// Gets or sets the linefeed. Default is LF (\n)
     /// </summary>
-    public string Linefeed { get; set; }
+    public string? Linefeed { get; set; }
 
     /// <summary>
     /// Gets or sets the name of the input file. See remarks for more information.
@@ -98,23 +98,23 @@ public ScssOptions()
     /// This is recommended when <see cref="GenerateSourceMap"/> so that they can properly refer back to their intended files.
     /// Note also that this is not used to load the data from a file. Use <see cref="Scss.ConvertFileToCss"/> instead.
     /// </remarks>
-    public string InputFile { get; set; }
+    public string? InputFile { get; set; }
 
     /// <summary>
     /// Gets or sets the location of the output file. This is recommended when <see cref="GenerateSourceMap"/> so that they can properly refer back to their intended files.
     /// </summary>
-    public string OutputFile { get; set; }
+    public string? OutputFile { get; set; }
 
     /// <summary>
     /// Gets or sets the intended location of the source map file. Note that is used when <see cref="GenerateSourceMap"/> is set. By default, if this property is not set,
     /// the <see cref="OutputFile"/> + ".map" extension will be used. Default is <c>null</c>
     /// </summary>
-    public string SourceMapFile { get; set; }
+    public string? SourceMapFile { get; set; }
 
     /// <summary>
     /// Gets or sets the value that will be emitted as sourceRoot in the source map information. Default is null.
     /// </summary>
-    public string SourceMapRoot { get; set; }
+    public string? SourceMapRoot { get; set; }
 
     /// <summary>
     /// Gets the include paths that will be used to search for @import directives in scss content.
@@ -124,5 +124,5 @@ public ScssOptions()
     /// <summary>
     /// Gets or sets a dynamic delegate used to resolve imports dynamically.
     /// </summary>
-    public TryImportDelegate TryImport { get; set; }        
+    public TryImportDelegate? TryImport { get; set; }        
 }
\ No newline at end of file
diff --git a/src/SharpScss/ScssResult.cs b/src/SharpScss/ScssResult.cs
index fe3b079..3cddad8 100644
--- a/src/SharpScss/ScssResult.cs
+++ b/src/SharpScss/ScssResult.cs
@@ -17,7 +17,7 @@ public struct ScssResult
     /// <param name="css">The Css.</param>
     /// <param name="sourceMap">The source SourceMap.</param>
     /// <param name="includedFiles">The included files.</param>
-    public ScssResult(string css, string sourceMap, List<string> includedFiles)
+    public ScssResult(string css, string? sourceMap, List<string>? includedFiles)
     {
         Css = css;
         SourceMap = sourceMap;
@@ -32,10 +32,10 @@ public ScssResult(string css, string sourceMap, List<string> includedFiles)
     /// <summary>
     /// Gets the source map (may be null if <see cref="ScssOptions.GenerateSourceMap"/> was <c>false</c>.
     /// </summary>
-    public string SourceMap { get; }
+    public string? SourceMap { get; }
 
     /// <summary>
     /// Gets the included files used to generate this result when converting the input scss content.
     /// </summary>
-    public List<string> IncludedFiles { get; }
+    public List<string>? IncludedFiles { get; }
 }
\ No newline at end of file
diff --git a/src/SharpScss/SharpScss.csproj b/src/SharpScss/SharpScss.csproj
index be4a59d..2429a4a 100644
--- a/src/SharpScss/SharpScss.csproj
+++ b/src/SharpScss/SharpScss.csproj
@@ -2,14 +2,14 @@
 
   <PropertyGroup>
     <OutputType>Library</OutputType>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
     <IsPackable>true</IsPackable>
-
+    <Nullable>enable</Nullable>
     <LangVersion>11.0</LangVersion>
 
     <!-- Enable AOT analyzers -->
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
-    <IsAotCompatible>true</IsAotCompatible>
+    <IsAotCompatible Condition="'$(TargetFramework)' != 'netstandard2.0'">true</IsAotCompatible>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -55,5 +55,9 @@
 
     <!--Add support for sourcelink-->
     <PackageReference Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" />
+    <PackageReference Include="PolySharp">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
 </Project>