diff --git a/.travis.yml b/.travis.yml
index 822b2960..92caa5d6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ jdk:
   - oraclejdk8
 before_install:
   - sudo /etc/init.d/postgresql stop
+  - sudo apt-get -y remove --purge postgresql-9.1
   - sudo apt-get -y remove --purge postgresql-9.2
   - sudo apt-get -y remove --purge postgresql-9.3
   - sudo apt-get -y remove --purge postgresql-9.4