diff --git a/Jenkinsfile.groovy b/Jenkinsfile.groovy
index 3f87b24..7bb06b5 100644
--- a/Jenkinsfile.groovy
+++ b/Jenkinsfile.groovy
@@ -19,13 +19,13 @@ pipeline {
                     }
                 }
                 // requires maven-failsafe-plugin:2.21 when it is released
-//                stage('Java 9') {
-//                    steps {
-//                        withMaven(maven: 'maven 3.5.2', jdk: 'JDK 9') {
-//                            sh 'mvn clean install'
-//                        }
-//                    }
-//                }
+                stage('Java 9') {
+                    steps {
+                        withMaven(maven: 'maven 3.5.2', jdk: 'JDK 9') {
+                            sh 'mvn clean install'
+                        }
+                    }
+                }
             }
         }
         stage('Reporting') {