diff --git a/.travis.yml b/.travis.yml
index 8de984a..c2746ad 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 sudo: required
-dist: precise
+dist: trusty
 
 language: php
 php:
@@ -10,14 +10,18 @@ php:
 env:
   - DB=1.7.1 ES_PKG=https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-1.7.1.deb
   - DB=2.2.0 ES_PKG=https://download.elasticsearch.org/elasticsearch/release/org/elasticsearch/distribution/deb/elasticsearch/2.2.0/elasticsearch-2.2.0.deb
+  - DB=5.3.2 ES_PKG=https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.3.2.deb
 
 before_install:
   - curl -O $ES_PKG && sudo dpkg -i --force-confnew $(printf 'elasticsearch-%s.deb' $DB)
   - sudo service elasticsearch start
-  - sleep 3
+  - until curl localhost:9200; do sleep 1; done
 
 install:
-  - composer install --dev
+  # Make sure old ES versions use the old ES lib. ES lib 5.0+ is not compatible with old ES versions
+  - sh -c "if [ '$DB' = '1.7.1' ]; then sed -i 's/<6.0/<5.0/' composer.json; fi"
+  - sh -c "if [ '$DB' = '2.2.0' ]; then sed -i 's/<6.0/<5.0/' composer.json; fi"
+  - composer install
 
 script: ./vendor/bin/phpunit --coverage-text
 
diff --git a/README.md b/README.md
index 3bfc4ba..9cc57ea 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,9 @@ In many cases, rebuilding an index requires a clean slate so that the entire ind
 composer require zumba/elasticsearch-index-rotate
 ```
 
+Elasticsearch Index Rotator supports multiple versions of ElasticSearch server and uses the [official elasticsearch](https://packagist.org/packages/elasticsearch/elasticsearch) library for execute the commands.
+On your application, make sure you include this package as well and specify the version supported by your Elasticsearch server. See the library documentation for the versions.
+
 ## Usage
 
 #### Example Search
diff --git a/composer.json b/composer.json
index c61983b..3cf52e8 100644
--- a/composer.json
+++ b/composer.json
@@ -10,8 +10,8 @@
     ],
     "license": "MIT",
     "require": {
-        "php": ">=5.4.0",
-        "elasticsearch/elasticsearch": ">=1.0 <3.0",
+        "php": ">=5.5.0",
+        "elasticsearch/elasticsearch": ">=1.0 <6.0",
         "psr/log": "^1.0"
     },
     "autoload": {