.travis.yml in embulk-input-zendesk-0.3.6 vs .travis.yml in embulk-input-zendesk-0.3.7

@@ -1,5 +1,5 @@
 language: java
 jdk:
-  - oraclejdk8
+  - openjdk8
 script:
   - ./gradlew checkstyle test jacocoTestReport
\ No newline at end of file