diff --git a/.travis.yml b/.travis.yml
index 610250b6391..d5d16794928 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,7 +29,7 @@ matrix:
     jdk: oraclejdk8
   - stage: build
     env: CI_SCRIPT=ci/test-mill-2.sh
-    jdk: oraclejdk9
+    jdk: oraclejdk8
 
 
   - stage: release