diff --git a/Curve/Curve.csproj b/Curve/Curve.csproj
index 9673b07..5112274 100644
--- a/Curve/Curve.csproj
+++ b/Curve/Curve.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Version>2.0.0</Version>
-    <TargetFramework>netstandard2.1</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <Description>A Bezier curve library for .NET Core</Description>
     <PackageId>MoonTools.Core.Curve</PackageId>
     <RootNamespace>MoonTools.Core.Curve</RootNamespace>
@@ -19,5 +19,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Numerics.Vectors" Version="4.5.0"/>
+    <PackageReference Include="Microsoft.Bcl.HashCode" Version="1.1.0"/>
   </ItemGroup>
 </Project>
\ No newline at end of file