diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f730d5..7fcff6f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,15 @@ jobs:
     runs-on: ${{ matrix.runs-on }}
     steps:
     - uses: actions/checkout@af513c7a016048ae468971c52ed77d9562c7c819
+
+    - name: Setup dotnet (main)
+      uses: actions/setup-dotnet@v1
+      
+    - name: Setup dotnet (testing netcore3)
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: '3.1.x'
+
     - run: dotnet --info
     
     - if: contains(matrix.runs-on, 'macOS') || contains(matrix.runs-on, 'ubuntu')
diff --git a/build/build.csproj b/build/build.csproj
index 6507c0c..c6e4e61 100644
--- a/build/build.csproj
+++ b/build/build.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Bullseye" Version="3.3.0" />
+    <PackageReference Include="Bullseye" Version="3.5.0" />
     <PackageReference Include="SimpleExec" Version="6.2.0" />
   </ItemGroup>
   
diff --git a/global.json b/global.json
index 9e837b2..7abee74 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "3.1.300",
-    "rollForward": "latestPatch"
+    "version": "5.0.100",
+    "rollForward": "latestMajor"
   }
 }
\ No newline at end of file
diff --git a/src/IdentityModel.AspNetCore.csproj b/src/IdentityModel.AspNetCore.csproj
index 9171b75..16df0a7 100644
--- a/src/IdentityModel.AspNetCore.csproj
+++ b/src/IdentityModel.AspNetCore.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
@@ -20,23 +20,20 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="IdentityModel" Version="4.3.0" />
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+    
+    <PackageReference Include="IdentityModel" Version="4.5.0" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
     <PackageReference Include="minver" Version="2.3.1" PrivateAssets="All" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="Microsoft.AspNetCore.Authentication" Version="2.1.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="2.1.0" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="2.1.0" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="2.1.0" />
-  </ItemGroup>
-
   <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-    
     <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="3.1.0" />
   </ItemGroup>
+
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net5.0' ">
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="5.0.0" />
+  </ItemGroup>
   
   <!--SourceLink-->
   <PropertyGroup>
diff --git a/test/Tests/Tests.csproj b/test/Tests/Tests.csproj
index 1550a21..335cae1 100644
--- a/test/Tests/Tests.csproj
+++ b/test/Tests/Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>