diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index af8f898..ac1e831 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -16,5 +16,30 @@ jobs:
         
     - name: Build with dotnet
       run: dotnet build src/MockQueryable/*.sln --configuration Release
-    - name: Test with dotnet
-      run: dotnet test src/MockQueryable/*.sln
+    - name: Test with coverage (coverlet)
+      run: |
+          mkdir -p TestResults
+
+          COVERAGE_DIR="$(pwd)/TestResults"
+          
+          dotnet test src/MockQueryable/*.sln \
+            --configuration Release \
+            --no-build \
+            /p:CollectCoverage=true \
+            /p:CoverletOutput="$COVERAGE_DIR/coverage-" \
+            /p:CoverletOutputFormat=opencover
+
+            ls -R "$COVERAGE_DIR" || echo Empty folder
+    - name: Upload coverage results (artifact)
+      uses: actions/upload-artifact@v4
+      with:
+          name: code-coverage
+          path: TestResults
+          
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v4
+      with:
+          files: TestResults/**/*.opencover.xml
+          flags: unittests
+          fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/README.md b/README.md
index c4bb454..c26dfdc 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ Extensions for mocking [Entity Framework Core](https://github.com/dotnet/efcore)
 
 ## ✅ Build & Status
 
+[![codecov](https://codecov.io/github/romantitov/MockQueryable/graph/badge.svg?token=dtiYMUNHUo)](https://codecov.io/github/romantitov/MockQueryable)
 ![.NET Core](https://github.com/romantitov/MockQueryable/workflows/.NET%20Core/badge.svg)
 [![License](https://img.shields.io/github/license/romantitov/MockQueryable.svg)](https://github.com/romantitov/MockQueryable/blob/master/LICENSE)
 
@@ -138,3 +139,4 @@ See the [sample project](https://github.com/romantitov/MockQueryable/tree/master
 
 
 
+
diff --git a/src/MockQueryable/MockQueryable.Sample/MockQueryable.Sample.csproj b/src/MockQueryable/MockQueryable.Sample/MockQueryable.Sample.csproj
index c40b551..73a3cbd 100644
--- a/src/MockQueryable/MockQueryable.Sample/MockQueryable.Sample.csproj
+++ b/src/MockQueryable/MockQueryable.Sample/MockQueryable.Sample.csproj
@@ -11,6 +11,7 @@
   <ItemGroup>
     <PackageReference Include="AutoMapper" Version="15.1.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="coverlet.msbuild" Version="6.0.4" PrivateAssets="All" />
     <!--<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />-->
     <PackageReference Include="NUnit" Version="4.4.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="5.2.0">