try to fix travis

copelco · copelco · commit 24201acc78f3 · 2018-01-16T22:02:03.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,7 +7,10 @@ python:
 
 # Match postgresql version to that in conf/pillar/project.sls
 addons:
-  postgresql: "9.3"
+  postgresql: "9.6"
+  apt:
+    packages:
+      - postgresql-9.6-postgis-2.3
 
 cache:
   directories:
