diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bdbfa64..69537f6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,6 +27,7 @@ jobs:
         uses: PANiXiDA-Infrastructure/ci-cd/.github/workflows/dotnet-sonar.yml@main
         with:
           project-key: ${{ vars.SONAR_PROJECT_KEY }}
+          project-version-file: version.json
         secrets:
           sonar-token: ${{ secrets.SONAR_TOKEN }}
           registry-user: ${{ secrets.REGISTRY_USER }}
diff --git a/README.md b/README.md
index 65f94f9..31a2837 100644
--- a/README.md
+++ b/README.md
@@ -315,3 +315,11 @@ When changing the package:
 This project is licensed under the Apache-2.0 license.
 
 See [LICENSE](LICENSE) for details.
+
+## SonarQube new code
+
+The SonarQube project uses `Previous version`. CI passes the stable `version`
+field from the root `version.json` via `project-version-file: version.json`.
+Increment that version when starting the next development cycle. Computed NuGet
+build versions do not move the new-code baseline on every build. Pull requests
+are analyzed against their target branch independently of this version period.