diff --git a/ci.hocon b/ci.hocon
index 7007030a80ffe1a6200d7ba0e5786c41e5a0bbb7..c2e5265dc7963abcab16d4213ac198b3a96c1a15 100644
--- a/ci.hocon
+++ b/ci.hocon
@@ -13,6 +13,7 @@ java8Downloads : {
   downloads : {
     EXTRA_JAVA_HOMES : { pathlist :[
       ${java7}
+      ${java9}
     ]}
     JAVA_HOME : ${java8}
   }