diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4b1de82..dc4d87e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,59 +2,67 @@ name: CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 jobs:
-
   build:
     runs-on: windows-latest
 
     steps:
+      # Prepare
 
-    # Prepare
-      
-      - name: Installing .NET Core 2.1...
+      - name: Install .NET Core 2.1
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 2.1.x        
+          dotnet-version: 2.1.x
 
-      - name: Installing .NET Core 3.1...
+      - name: Install .NET Core 3.1
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 3.1.x        
-      
-      - name: Installing .NET 5.0...
+          dotnet-version: 3.1.x
+
+      - name: Install .NET 5.0
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 5.0.x        
+          dotnet-version: 5.0.x
 
-      - name: Getting sources...
+      - name: Install Stryker
+        run: dotnet tool install --global dotnet-stryker
+
+      - name: Get sources
         uses: actions/checkout@v2
 
-      - name: Restoring packages...
-        run: dotnet restore
+      # Build and Test
 
+      - name: Restore packages
+        run: dotnet restore
 
-    # Build and Test (Debug)
+      - name: Build Debug
+        run: dotnet build --configuration Debug
 
-      - name: Building Debug...
-        run: dotnet build --configuration Debug --no-incremental
+      - name: Run tests
+        run: dotnet test --no-build --collect "Code Coverage"
 
-      - name: Running tests...
-        run: dotnet test --no-build
+      # Run Mutation Tests
 
+      - name: Run mutation tests
+        run: dotnet stryker
 
-    # Build and Publish (Release)
+      - name: Upload Stryker Output
+        uses: actions/upload-artifact@v2
+        with:
+          name: mutation-tests
+          path: "**/mutation-report.html"
+          if-no-files-found: error
 
-      - name: Cleaning up...
-        run: git clean -d -x -f
+      # Build and Publish (Release)
 
-      - name: Building Release...
-        run: dotnet build --configuration Release --no-incremental
+      - name: Build Release
+        run: dotnet build --configuration Release
 
-      - name: Uploading NuGet package...
+      - name: Upload NuGet package
         uses: actions/upload-artifact@v2
         with:
           name: nuget