.travis.yml in antbird-0.0.6 vs .travis.yml in antbird-0.0.7

- old
+ new

@@ -5,9 +5,10 @@
 env:
   - ES_VERSION=6.2.4
   - ES_VERSION=6.1.4
   - ES_VERSION=5.6.9
   - ES_VERSION=5.5.3
+  - ES_VERSION=5.1.2
 
 before_install: gem install bundler -v 1.16.1
 install:
   - wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
   - tar -xzf elasticsearch-${ES_VERSION}.tar.gz