azkaban-aplcache

diff --git a/.travis.yml b/.travis.yml
index bc5b2c5..b593616 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,4 +3,13 @@ languages: java
 jdk:
   - oraclejdk8
 sudo: false
-script: ./gradlew clean build 
+script: ./gradlew clean build
+
+# see https://docs.travis-ci.com/user/languages/java/#Projects-Using-Gradle
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/