diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 61e40c54..0eb2d907 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -10,10 +10,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
-      - name: Setup .NET Core SDK 3.1.x
+      - name: Setup .NET SDK 6.0.x
         uses: actions/setup-dotnet@v1.7.2
         with:
-          dotnet-version: '3.1.x'
+          dotnet-version: '6.0.x'
       - name: Install dependencies
         run: dotnet restore
       - name: Build
@@ -31,10 +31,10 @@ jobs:
           submodules: recursive
           # needed because of commit-lint, see https://github.com/conventional-changelog/commitlint/issues/3376
           fetch-depth: 0
-      - name: Setup .NET SDK 5.0.x
+      - name: Setup .NET SDK 6.0.x
         uses: actions/setup-dotnet@v1.7.2
         with:
-          dotnet-version: '5.0.x'
+          dotnet-version: '6.0.x'
       - name: Install dependencies
         run: dotnet restore
       - name: Build
@@ -84,10 +84,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
-      - name: Setup .NET Core SDK 3.1.x
+      - name: Setup .NET SDK 6.0.x
         uses: actions/setup-dotnet@v1.7.2
         with:
-          dotnet-version: '3.1.x'
+          dotnet-version: '6.0.x'
       - name: Install dependencies
         run: dotnet restore
       - name: Build
diff --git a/NOnion.Tests/NOnion.Tests.csproj b/NOnion.Tests/NOnion.Tests.csproj
index 3be8df35..934851eb 100644
--- a/NOnion.Tests/NOnion.Tests.csproj
+++ b/NOnion.Tests/NOnion.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>