diff --git a/bin/travis-install-dependencies b/bin/travis-install-dependencies
index 3554468510e..e8cdeb89525 100755
--- a/bin/travis-install-dependencies
+++ b/bin/travis-install-dependencies
@@ -16,6 +16,12 @@ fi
 sudo apt-get update -qq
 sudo apt-get install postgresql-$PGVERSION solr-jetty libcommons-fileupload-java:amd64=1.2.2-1
 
+if [ $PGVERSION == '8.4' ]
+then
+  # force postgres to use 5432 as it's port
+  sudo sed -i -e 's/port = 5433/port = 5432/g' /etc/postgresql/8.4/main/postgresql.conf
+fi
+
 sudo service postgresql restart
 
 # Setup postgres' users and databases