diff --git a/.github/workflows/build-dev.yml b/.github/workflows/build-dev.yml
index fc9b9c565..8e148f41b 100644
--- a/.github/workflows/build-dev.yml
+++ b/.github/workflows/build-dev.yml
@@ -12,18 +12,6 @@ on:
       - '*'
 
 jobs:
-#  test-netcore-linux:
-#    runs-on: ubuntu-latest
-#
-#    steps:
-#      - uses: actions/checkout@v2.3.4
-#      - uses: actions/setup-dotnet@v1
-#        with:
-#          dotnet-version: '3.1.201'
-#
-#      - name: Run tests netcoreapp3.1
-#        run: dotnet test -c Release -f netcoreapp3.1
-
   test-win:
     runs-on: windows-latest
     
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index d1d73d206..083fe69eb 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v2.3.4
       - uses: actions/setup-dotnet@v1.8.0
         with:
-          dotnet-version: '3.1.201'
+          dotnet-version: '5.0'
           
       - name: Run tests
         run: dotnet test -c Release
diff --git a/benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj b/benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj
index 399304939..d72bbead9 100644
--- a/benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj
+++ b/benchmarks/RestSharp.Benchmarks/RestSharp.Benchmarks.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net5</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/test/RestSharp.IntegrationTests/RestSharp.IntegrationTests.csproj b/test/RestSharp.IntegrationTests/RestSharp.IntegrationTests.csproj
index 4a149eacf..bbef71737 100644
--- a/test/RestSharp.IntegrationTests/RestSharp.IntegrationTests.csproj
+++ b/test/RestSharp.IntegrationTests/RestSharp.IntegrationTests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net452;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net452;net5</TargetFrameworks>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net452|AnyCPU'">
     <WarningLevel>0</WarningLevel>
diff --git a/test/RestSharp.Serializers.Tests/RestSharp.Serializers.Tests.csproj b/test/RestSharp.Serializers.Tests/RestSharp.Serializers.Tests.csproj
index a485de1a9..4896525f2 100644
--- a/test/RestSharp.Serializers.Tests/RestSharp.Serializers.Tests.csproj
+++ b/test/RestSharp.Serializers.Tests/RestSharp.Serializers.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net461;net5</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj b/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
index 2a6565e03..12d2516a6 100644
--- a/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
+++ b/test/RestSharp.Tests.Shared/RestSharp.Tests.Shared.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net452;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net452;net5</TargetFrameworks>
     <IsTestProject>false</IsTestProject>
   </PropertyGroup>
   <ItemGroup>
diff --git a/test/RestSharp.Tests/RestSharp.Tests.csproj b/test/RestSharp.Tests/RestSharp.Tests.csproj
index c58c14f20..7beaf5e38 100644
--- a/test/RestSharp.Tests/RestSharp.Tests.csproj
+++ b/test/RestSharp.Tests/RestSharp.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net452;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net452;net5</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Moq" Version="4.16.1" />