diff --git a/build/MathNet.Numerics.CUDA.Win.nuspec b/build/MathNet.Numerics.CUDA.Win.nuspec
index 731ea155..25660b25 100644
--- a/build/MathNet.Numerics.CUDA.Win.nuspec
+++ b/build/MathNet.Numerics.CUDA.Win.nuspec
@@ -25,6 +25,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.CUDA.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.CUDA.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.CUDA.Win.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Linux-x64.nuspec b/build/MathNet.Numerics.MKL.Linux-x64.nuspec
index c7c2ada0..9a2f220a 100644
--- a/build/MathNet.Numerics.MKL.Linux-x64.nuspec
+++ b/build/MathNet.Numerics.MKL.Linux-x64.nuspec
@@ -24,6 +24,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Linux-x64.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Linux-x64.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Linux-x64.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Linux-x86.nuspec b/build/MathNet.Numerics.MKL.Linux-x86.nuspec
index be0079af..35b07da0 100644
--- a/build/MathNet.Numerics.MKL.Linux-x86.nuspec
+++ b/build/MathNet.Numerics.MKL.Linux-x86.nuspec
@@ -24,6 +24,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Linux-x86.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Linux-x86.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Linux-x86.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Linux.nuspec b/build/MathNet.Numerics.MKL.Linux.nuspec
index d1105a14..e834ba01 100644
--- a/build/MathNet.Numerics.MKL.Linux.nuspec
+++ b/build/MathNet.Numerics.MKL.Linux.nuspec
@@ -26,6 +26,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Linux.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Linux.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Linux.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Win-x64.nuspec b/build/MathNet.Numerics.MKL.Win-x64.nuspec
index a97ce5c2..52236495 100644
--- a/build/MathNet.Numerics.MKL.Win-x64.nuspec
+++ b/build/MathNet.Numerics.MKL.Win-x64.nuspec
@@ -24,6 +24,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Win-x64.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Win-x64.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Win-x64.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Win-x86.nuspec b/build/MathNet.Numerics.MKL.Win-x86.nuspec
index 88ed139b..83ebd4c3 100644
--- a/build/MathNet.Numerics.MKL.Win-x86.nuspec
+++ b/build/MathNet.Numerics.MKL.Win-x86.nuspec
@@ -24,6 +24,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Win-x86.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Win-x86.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Win-x86.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.MKL.Win.nuspec b/build/MathNet.Numerics.MKL.Win.nuspec
index 11d7ec51..4d07f46f 100644
--- a/build/MathNet.Numerics.MKL.Win.nuspec
+++ b/build/MathNet.Numerics.MKL.Win.nuspec
@@ -26,6 +26,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.MKL.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.MKL.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.MKL.Win.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/MathNet.Numerics.OpenBLAS.Win.nuspec b/build/MathNet.Numerics.OpenBLAS.Win.nuspec
index 92cfb7aa..4df9885f 100644
--- a/build/MathNet.Numerics.OpenBLAS.Win.nuspec
+++ b/build/MathNet.Numerics.OpenBLAS.Win.nuspec
@@ -33,6 +33,10 @@
         <file src="..\..\build\NativeProvider.targets" target="build\net48\MathNet.Numerics.OpenBLAS.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net461\MathNet.Numerics.OpenBLAS.Win.targets" />
         <file src="..\..\build\NativeProvider.targets" target="buildTransitive\net48\MathNet.Numerics.OpenBLAS.Win.targets" />
+        <file src="..\..\build\_._" target="build\net5.0\_._" />
+        <file src="..\..\build\_._" target="build\netstandard2.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\net5.0\_._" />
+        <file src="..\..\build\_._" target="buildTransitive\netstandard2.0\_._" />
         <file src="..\..\build\icon.png" target="icon.png" />
     </files>
 </package>
diff --git a/build/_._ b/build/_._
new file mode 100644
index 00000000..e69de29b