diff --git a/Jenkinsfile.groovy b/Jenkinsfile.groovy
index 7198d71..9207dae 100644
--- a/Jenkinsfile.groovy
+++ b/Jenkinsfile.groovy
@@ -28,7 +28,14 @@ pipeline {
                     sh "${mvn} checkstyle:checkstyle"
                     sh "${mvn} pmd:pmd"
                     pmd canComputeNew: false, defaultEncoding: '', healthy: '', pattern: '', unHealthy: ''
-                    withSonarQubeEnv('sonarqube') {
+                }
+            }
+        }
+        stage('SonarQube (develop only)') {
+            when { expression { env.GIT_BRANCH == 'develop' && env.GIT_URL.startsWith('https://') } }
+            steps {
+                withSonarQubeEnv('sonarqube') {
+                    withMaven(maven: 'maven', jdk: 'JDK LTS') {
                         sh "${mvn} org.sonarsource.scanner.maven:sonar-maven-plugin:3.4.0.905:sonar"
                     }
                 }
@@ -37,7 +44,7 @@ pipeline {
         stage('Build Java Next') {
             steps {
                 withMaven(maven: 'maven', jdk: 'JDK Next') {
-                    sh "${mvn} clean install"
+                    sh "${mvn} clean install -Djava.version=9"
                 }
             }
         }