diff --git a/.travis.yml b/.travis.yml
index 0a2330c6..6d7332bd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,10 @@ matrix:
       jdk: openjdk8
     - os: linux
       jdk: oraclejdk8
+    - os: linux
+      jdk: oraclejdk9
+    - os: linux
+      jdk: oraclejdk11
     - os: osx
       osx_image: xcode9.2
     - os: windows