diff --git a/WebPush.Test/WebPush.Test.csproj b/WebPush.Test/WebPush.Test.csproj
index ca25105..6c33d9c 100755
--- a/WebPush.Test/WebPush.Test.csproj
+++ b/WebPush.Test/WebPush.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net45;net46;net471;net48;net5.0;netcoreapp2.0;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net461;net6.0;netcoreapp3.1</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/WebPush/WebPush.csproj b/WebPush/WebPush.csproj
index 068e02a..3cbd1d1 100755
--- a/WebPush/WebPush.csproj
+++ b/WebPush/WebPush.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net45;net46;net471;net48;net5.0;netstandard1.3;netstandard2.0;netstandard2.1</TargetFrameworks>
+    <TargetFrameworks>net461;net6.0;netstandard2.0</TargetFrameworks>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Version>1.0.12</Version>
     <Authors>Cory Thompson</Authors>
@@ -24,12 +24,12 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
-    <PackageReference Include="Portable.BouncyCastle" Version="1.8.1.3" />
+    <PackageReference Include="BouncyCastle.Cryptography" Version="2.2.1" />
   </ItemGroup>
 
 
   <ItemGroup>
-    <Reference Include="System.Net.Http" Condition="'$(TargetFramework)' == 'net46' OR '$(TargetFramework)' == 'net45' OR '$(TargetFramework)' == 'net48' OR '$(TargetFramework)' == 'net471'" />
+    <Reference Include="System.Net.Http" Condition="'$(TargetFramework)' == 'net461'" />
   </ItemGroup>
 
 </Project>