diff --git a/.travis.yml b/.travis.yml
index 1e8107cfa2779db2a76dbb74e7cd34f437682293..01be4ff72d1f6f2b01d843f2e3ee83af14f94ec6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,8 +6,9 @@ cache: pip
 python:
   - '3.6'
 
-services:
-  - postgresql
+addons:
+  # Django 2.1+ requires PostgreSQL 9.4+
+  postgresql: '9.4'
 
 install:
   - pip install -r requirements.txt