diff --git a/Flow.Launcher.Localization.SourceGenerators/Localize/EnumSourceGenerator.cs b/Flow.Launcher.Localization.SourceGenerators/Localize/EnumSourceGenerator.cs
index 2685bb9..381000f 100644
--- a/Flow.Launcher.Localization.SourceGenerators/Localize/EnumSourceGenerator.cs
+++ b/Flow.Launcher.Localization.SourceGenerators/Localize/EnumSourceGenerator.cs
@@ -185,6 +185,10 @@ private void GenerateSource(
             GeneratedHeaderFromPath(sourceBuilder, enumFullName);
             sourceBuilder.AppendLine();
 
+            // Generate nullable enable
+            sourceBuilder.AppendLine("#nullable enable");
+            sourceBuilder.AppendLine();
+
             // Generate namespace
             sourceBuilder.AppendLine($"namespace {enumNamespace};");
             sourceBuilder.AppendLine();
@@ -208,12 +212,12 @@ private void GenerateSource(
             sourceBuilder.AppendLine($"{tabString}public {enumName} Value {{ get; private init; }}");
             sourceBuilder.AppendLine();
 
-            sourceBuilder.AppendLine($"{tabString}private string _display;");
+            sourceBuilder.AppendLine($"{tabString}private string? _display;");
             sourceBuilder.AppendLine();
             sourceBuilder.AppendLine($"{tabString}/// <summary>");
             sourceBuilder.AppendLine($"{tabString}/// The display text of the enum value");
             sourceBuilder.AppendLine($"{tabString}/// </summary>");
-            sourceBuilder.AppendLine($"{tabString}public string Display");
+            sourceBuilder.AppendLine($"{tabString}public string? Display");
             sourceBuilder.AppendLine($"{tabString}{{");
             sourceBuilder.AppendLine($"{tabString}{tabString}get => _display;");
             sourceBuilder.AppendLine($"{tabString}{tabString}set");
@@ -230,13 +234,13 @@ private void GenerateSource(
             sourceBuilder.AppendLine($"{tabString}/// <summary>");
             sourceBuilder.AppendLine($"{tabString}/// The localization key of the enum value");
             sourceBuilder.AppendLine($"{tabString}/// </summary>");
-            sourceBuilder.AppendLine($"{tabString}public string LocalizationKey {{ get; set; }}");
+            sourceBuilder.AppendLine($"{tabString}public string? LocalizationKey {{ get; set; }}");
             sourceBuilder.AppendLine();
 
             sourceBuilder.AppendLine($"{tabString}/// <summary>");
             sourceBuilder.AppendLine($"{tabString}/// The localization value of the enum value");
             sourceBuilder.AppendLine($"{tabString}/// </summary>");
-            sourceBuilder.AppendLine($"{tabString}public string LocalizationValue {{ get; set; }}");
+            sourceBuilder.AppendLine($"{tabString}public string? LocalizationValue {{ get; set; }}");
             sourceBuilder.AppendLine();
 
             // Generate API instance
diff --git a/Flow.Launcher.Localization/Flow.Launcher.Localization.csproj b/Flow.Launcher.Localization/Flow.Launcher.Localization.csproj
index 6e42b39..e2b442b 100644
--- a/Flow.Launcher.Localization/Flow.Launcher.Localization.csproj
+++ b/Flow.Launcher.Localization/Flow.Launcher.Localization.csproj
@@ -12,10 +12,10 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <Version>0.0.4</Version>
-    <PackageVersion>0.0.4</PackageVersion>
-    <AssemblyVersion>0.0.4</AssemblyVersion>
-    <FileVersion>0.0.4</FileVersion>
+    <Version>0.0.5</Version>
+    <PackageVersion>0.0.5</PackageVersion>
+    <AssemblyVersion>0.0.5</AssemblyVersion>
+    <FileVersion>0.0.5</FileVersion>
     <PackageId>Flow.Launcher.Localization</PackageId>
     <Title>Flow Launcher Localization Toolkit</Title>
     <Description>Localization toolkit for Flow Launcher and its plugins</Description>