Update .travis.yml
diff --git a/.travis.yml b/.travis.yml
index c1dd1c0..d86141e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,14 +15,12 @@
 

 language: java

 sudo: false

-dist: precise

 cache:

   directories:

     - $HOME/.m2

 jdk:

-  - openjdk7

-  - oraclejdk7

   - oraclejdk8

-

+  - openjdk8

+  - openjdk11

 after_success:

   - mvn clean cobertura:cobertura coveralls:report