diff --git a/.travis.yml b/.travis.yml
index 831c11b..b9196cb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,6 +26,13 @@ before_install:
 
   # Install postgres db and build deps
   - sudo /etc/init.d/postgresql stop # stop travis default instance
+  - 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
+  - sudo apt-get -y remove --purge postgis
+  - sudo apt-get -y autoremove
+
   - sudo apt-get -y install postgresql-9.5=9.5.2-2ubuntu1
   - sudo apt-get -y install postgresql-server-dev-9.5=9.5.2-2ubuntu1
   - sudo apt-get -y install postgresql-plpython-9.5=9.5.2-2ubuntu1