diff --git a/.github/workflows/ci_ut.yml b/.github/workflows/ci_ut.yml
index b301cf77bd713f39e6a28b94d5468ce964d04ce5..230e85d1b1fba769cc29a96595e8a9a51d31acdf 100644
--- a/.github/workflows/ci_ut.yml
+++ b/.github/workflows/ci_ut.yml
@@ -67,10 +67,14 @@ jobs:
       - name: Upload coverage report to codecov
         run: |
           CODECOV_TOKEN="09c2663f-b091-4258-8a47-c981827eb29a" bash <(curl -s https://codecov.io/bash)
+      # Set up JDK 11 for SonarCloud.
+      - name: Set up JDK 1.11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.11
       - name: Run SonarCloud Analysis
         run: >
-          mvn verify --batch-mode
-          org.sonarsource.scanner.maven:sonar-maven-plugin:3.6.1.1688:sonar
+          mvn --batch-mode verify sonar:sonar
           -Dsonar.coverage.jacoco.xmlReportPaths=target/site/jacoco/jacoco.xml
           -Dmaven.test.skip=true
           -Dsonar.host.url=https://sonarcloud.io
diff --git a/pom.xml b/pom.xml
index 57269748cfcc2bcb285818354c74592afc4d6a5b..a0c719453c8c81b06c92c95914a2622fe2cfaf12 100644
--- a/pom.xml
+++ b/pom.xml
@@ -599,6 +599,10 @@
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
                     <version>${maven-javadoc-plugin.version}</version>
+                    <configuration>
+                        <source>8</source>
+                        <failOnError>false</failOnError>
+                    </configuration>
                 </plugin>
 
                 <plugin>