.travis.yml in postgres-copy-1.4.0 vs .travis.yml in postgres-copy-1.4.1

@@ -1,7 +1,13 @@
 language: ruby
 rvm:
   - 2.3.1
 
+services:
+  - postgresql
+
+addons:
+  postgresql: '9.4'
+
 branches:
   only:
     - master