diff --git a/.travis.yml b/.travis.yml
index dca3a8f0..fa6ed17e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ sudo: false
 cache: pip
 
 addons:
+  postgresql: "9.6"
   apt:
     packages:
       - expect-dev  # provides unbuffer utility