diff --git a/.travis.yml b/.travis.yml
index b830e7e..760158e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ jdk:
   - openjdk7
   - oraclejdk7
   - oraclejdk8
+  - oraclejdk9
 services:
   - mongodb
 branches: