diff --git a/.github/workflows/sonar.yml b/.github/workflows/sonar.yml
index c7c3a45473..5026cc4dbd 100644
--- a/.github/workflows/sonar.yml
+++ b/.github/workflows/sonar.yml
@@ -35,4 +35,4 @@ jobs:
       - env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-        run: mvn --batch-mode install -Dinvoker.skip org.sonarsource.scanner.maven:sonar-maven-plugin:sonar -Pjacoco -Dsonar.qualitygate.wait=true
+        run: mvn --batch-mode install -Dinvoker.skip org.sonarsource.scanner.maven:sonar-maven-plugin:sonar -Pjacoco -Dsonar.java.source=1.8 -Dsonar.qualitygate.wait=true