diff --git a/Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj b/Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj
index 629a9c39f2..7f870ff27a 100644
--- a/Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj
+++ b/Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj
@@ -4,7 +4,7 @@
     <Description>Convention-based tests for Octokit</Description>
     <AssemblyTitle>Octokit.Tests.Conventions</AssemblyTitle>
     <Authors>GitHub</Authors>
-    <TargetFrameworks>netcoreapp2.1;net452</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net452</TargetFrameworks>
     <NoWarn>$(NoWarn);CS4014;CS1998</NoWarn>
     <AssemblyName>Octokit.Tests.Conventions</AssemblyName>
     <PackageId>Octokit.Tests.Conventions</PackageId>
diff --git a/Octokit.Tests.Integration/Octokit.Tests.Integration.csproj b/Octokit.Tests.Integration/Octokit.Tests.Integration.csproj
index 7e6c0b750e..29e43af0e7 100644
--- a/Octokit.Tests.Integration/Octokit.Tests.Integration.csproj
+++ b/Octokit.Tests.Integration/Octokit.Tests.Integration.csproj
@@ -4,7 +4,7 @@
     <Description>Integration tests for Octokit</Description>
     <AssemblyTitle>Octokit.Tests.Integration</AssemblyTitle>
     <Authors>GitHub</Authors>
-    <TargetFrameworks>netcoreapp2.1;net452</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net452</TargetFrameworks>
     <NoWarn>$(NoWarn);CS4014;CS1998</NoWarn>
     <AssemblyName>Octokit.Tests.Integration</AssemblyName>
     <PackageId>Octokit.Tests.Integration</PackageId>
@@ -19,7 +19,7 @@
     <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.0' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
     <DefineConstants>$(DefineConstants);GITHUBJWT_HELPER_AVAILABLE</DefineConstants>
   </PropertyGroup>
   
@@ -45,7 +45,7 @@
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp2.1'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
     <PackageReference Include="GitHubJwt" Version="0.0.4" />
   </ItemGroup>
 
diff --git a/Octokit.Tests/Octokit.Tests.csproj b/Octokit.Tests/Octokit.Tests.csproj
index e59d0f2e50..d1f8f882eb 100644
--- a/Octokit.Tests/Octokit.Tests.csproj
+++ b/Octokit.Tests/Octokit.Tests.csproj
@@ -4,7 +4,7 @@
     <Description>Tests for Octokit</Description>
     <AssemblyTitle>Octokit.Tests</AssemblyTitle>
     <Authors>GitHub</Authors>
-    <TargetFrameworks>netcoreapp2.1;net452</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.0;net452</TargetFrameworks>
     <NoWarn>$(NoWarn);CS4014;CS1998</NoWarn>
     <AssemblyName>Octokit.Tests</AssemblyName>
     <PackageId>Octokit.Tests</PackageId>
@@ -32,7 +32,7 @@
     <PackageReference Include="NSubstitute" Version="4.2.1" />
   </ItemGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.0' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
     <DefineConstants>$(DefineConstants);NO_SERIALIZABLE;HAS_TYPEINFO</DefineConstants>
   </PropertyGroup>
 
diff --git a/build/Build.csproj b/build/Build.csproj
index 0a9bb56631..070f4e1898 100644
--- a/build/Build.csproj
+++ b/build/Build.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/build/Context.cs b/build/Context.cs
index c6111a0850..dc5685f624 100644
--- a/build/Context.cs
+++ b/build/Context.cs
@@ -41,7 +41,7 @@ public DotNetCoreTestSettings GetTestSettings()
 
         if (!this.IsRunningOnWindows())
         {
-            var testFramework = "netcoreapp2.1";
+            var testFramework = "netcoreapp3.1";
 
             this.Information($"Running tests against {testFramework} only as we're not on Windows.");
             settings.Framework = testFramework;
diff --git a/build/Tasks/CodeCoverage.cs b/build/Tasks/CodeCoverage.cs
index 1d9f0b81b8..e972a12116 100644
--- a/build/Tasks/CodeCoverage.cs
+++ b/build/Tasks/CodeCoverage.cs
@@ -21,13 +21,13 @@ public override void Run(Context context)
                 context.Information("Executing Code Coverage for Project {0}...", project.Name);
 
                 var dotNetCoreCoverage = context.CodeCoverage
-                    .CombineWithFilePath(project.Name + "-netcoreapp2.1.xml");
+                    .CombineWithFilePath(project.Name + "-netcoreapp3.1.xml");
                 coverageFiles.Add(dotNetCoreCoverage);
 
                 context.Coverlet(project, new CoverletToolSettings()
                 {
                     Configuration = context.Configuration,
-                    Framework = "netcoreapp2.1",
+                    Framework = "netcoreapp3.1",
                     Output = dotNetCoreCoverage.FullPath
                 });