diff --git a/Octokit.GraphQL.Core.Generation.UnitTests/Octokit.GraphQL.Core.Generation.UnitTests.csproj b/Octokit.GraphQL.Core.Generation.UnitTests/Octokit.GraphQL.Core.Generation.UnitTests.csproj
index 1054c4e9..07907e0d 100644
--- a/Octokit.GraphQL.Core.Generation.UnitTests/Octokit.GraphQL.Core.Generation.UnitTests.csproj
+++ b/Octokit.GraphQL.Core.Generation.UnitTests/Octokit.GraphQL.Core.Generation.UnitTests.csproj
@@ -4,13 +4,16 @@
     <LangVersion>7.2</LangVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="coverlet.msbuild" Version="2.2.1">
+    <PackageReference Include="coverlet.msbuild" Version="2.8.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Octokit.GraphQL.Core.Generation\Octokit.GraphQL.Core.Generation.csproj" />
diff --git a/Octokit.GraphQL.Core.UnitTests/Octokit.GraphQL.Core.UnitTests.csproj b/Octokit.GraphQL.Core.UnitTests/Octokit.GraphQL.Core.UnitTests.csproj
index 12674e21..ff259d0c 100644
--- a/Octokit.GraphQL.Core.UnitTests/Octokit.GraphQL.Core.UnitTests.csproj
+++ b/Octokit.GraphQL.Core.UnitTests/Octokit.GraphQL.Core.UnitTests.csproj
@@ -5,13 +5,16 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AgileObjects.ReadableExpressions" Version="1.12.1" />
-    <PackageReference Include="coverlet.msbuild" Version="2.2.1">
+    <PackageReference Include="coverlet.msbuild" Version="2.8.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Octokit.GraphQL.Core\Octokit.GraphQL.Core.csproj" />
diff --git a/Octokit.GraphQL.IntegrationTests/Octokit.GraphQL.IntegrationTests.csproj b/Octokit.GraphQL.IntegrationTests/Octokit.GraphQL.IntegrationTests.csproj
index e42dd161..54748c5c 100644
--- a/Octokit.GraphQL.IntegrationTests/Octokit.GraphQL.IntegrationTests.csproj
+++ b/Octokit.GraphQL.IntegrationTests/Octokit.GraphQL.IntegrationTests.csproj
@@ -5,13 +5,16 @@
     <LangVersion>7.2</LangVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Http.Polly" Version="2.1.1" />
     <PackageReference Include="Octokit" Version="0.29.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Octokit.GraphQL.Core\Octokit.GraphQL.Core.csproj" />
diff --git a/Octokit.GraphQL.UnitTests/Octokit.GraphQL.UnitTests.csproj b/Octokit.GraphQL.UnitTests/Octokit.GraphQL.UnitTests.csproj
index f7283cad..1faf9fdc 100644
--- a/Octokit.GraphQL.UnitTests/Octokit.GraphQL.UnitTests.csproj
+++ b/Octokit.GraphQL.UnitTests/Octokit.GraphQL.UnitTests.csproj
@@ -4,14 +4,17 @@
     <LangVersion>7.2</LangVersion>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Codecov" Version="1.0.5" />
-    <PackageReference Include="coverlet.msbuild" Version="2.2.1">
+    <PackageReference Include="Codecov" Version="1.10.0" />
+    <PackageReference Include="coverlet.msbuild" Version="2.8.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Octokit.GraphQL.Core.UnitTests\Octokit.GraphQL.Core.UnitTests.csproj" />
diff --git a/appveyor.yml b/appveyor.yml
index 50c8befd..1c51b803 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,9 +19,9 @@ after_test:
   - dotnet test -c Release --no-build /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:Exclude="[Octokit.GraphQL]Octokit.GraphQL.*" .\Octokit.GraphQL.UnitTests\Octokit.GraphQL.UnitTests.csproj
   - dotnet test -c Release --no-build /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:Exclude="[Octokit.GraphQL]Octokit.GraphQL.*" .\Octokit.GraphQL.Core.UnitTests\Octokit.GraphQL.Core.UnitTests.csproj
   - dotnet test -c Release --no-build /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:Exclude="[Octokit.GraphQL]Octokit.GraphQL.*" .\Octokit.GraphQL.Core.Generation.UnitTests\Octokit.GraphQL.Core.Generation.UnitTests.csproj
-  - '%USERPROFILE%\.nuget\packages\codecov\1.0.5\tools\codecov.exe -f .\Octokit.GraphQL.UnitTests\coverage.opencover.xml'
-  - '%USERPROFILE%\.nuget\packages\codecov\1.0.5\tools\codecov.exe -f .\Octokit.GraphQL.Core.UnitTests\coverage.opencover.xml'
-  - '%USERPROFILE%\.nuget\packages\codecov\1.0.5\tools\codecov.exe -f .\Octokit.GraphQL.Core.Generation.UnitTests\coverage.opencover.xml'
+  - '%USERPROFILE%\.nuget\packages\codecov\1.10.0\tools\codecov.exe -f .\Octokit.GraphQL.UnitTests\coverage.opencover.xml'
+  - '%USERPROFILE%\.nuget\packages\codecov\1.10.0\tools\codecov.exe -f .\Octokit.GraphQL.Core.UnitTests\coverage.opencover.xml'
+  - '%USERPROFILE%\.nuget\packages\codecov\1.10.0\tools\codecov.exe -f .\Octokit.GraphQL.Core.Generation.UnitTests\coverage.opencover.xml'
 
 artifacts:
   - path: '*.nupkg'