diff --git a/.travis.yml b/.travis.yml
index 316927f57..a2b5bf217 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,20 @@
 dist: trusty
 sudo: required
 notifications:
-  email: false
+  email:
+    - me+tv@zammad.com
+env:
+  - DB=mysql
+  - DB=postgresql
 addons:
+  postgresql: "9.4"
   apt:
     packages:
     - mysql-server-5.6
     - mysql-client-core-5.6
     - mysql-client-5.6
 services:
+  - postgresql
   - mysql
 language: ruby
 rvm:
@@ -16,13 +22,17 @@ rvm:
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y curl git-core patch build-essential bison zlib1g-dev libssl-dev libxml2-dev libxml2-dev sqlite3 libsqlite3-dev autotools-dev libxslt1-dev libyaml-0-2 autoconf automake libreadline6-dev libyaml-dev libtool libgmp-dev libgdbm-dev libncurses5-dev pkg-config libffi-dev libmysqlclient-dev postfix
-  - mysql -u root -e "CREATE USER 'some_user'@'localhost' IDENTIFIED BY 'some_pass';"
-  - mysql -u root -e "GRANT ALL PRIVILEGES ON *.* TO 'some_user'@'localhost';"
-  - export RAILS_ENV=development
-  - cp config/database.yml.dist config/database.yml
+  - if [ "${DB}" = "mysql" ]; then mysql -u root -e "CREATE USER 'some_user'@'localhost' IDENTIFIED BY 'some_pass';"; fi
+  - if [ "${DB}" = "mysql" ]; then mysql -u root -e "GRANT ALL PRIVILEGES ON *.* TO 'some_user'@'localhost';"; fi
+  - if [ "${DB}" = "mysql" ]; then cp config/database.yml.test-mysql config/database.yml; fi
+  - if [ "${DB}" = "postgresql" ]; then psql -c 'create database zammad_test;' -U postgres; fi
+  - if [ "${DB}" = "postgresql" ]; then cp config/database.yml.test-postgresql config/database.yml; fi
+  - export RAILS_ENV=test
 install:
-- bundle install --without postgres
+  - if [ "${DB}" = "mysql" ]; then bundle install --without postgres; fi
+  - if [ "${DB}" = "postgresql" ]; then bundle install; fi
 script:
+- bundle exec rubocop
 - rake db:create
 - rake db:migrate
 - rake db:seed
@@ -30,3 +40,17 @@ script:
 - rake test:controllers
 - rake assets:precompile
 - rake db:drop
+- rake db:create
+- rake db:migrate
+- rake db:seed
+- ruby -I test/ test/integration/auto_wizard_test.rb
+- rake db:drop
+- rake db:create
+- rake db:migrate
+- rake db:seed
+- ruby -I test/ test/integration/geo_location_test.rb
+- ruby -I test/ test/integration/geo_calendar_test.rb
+- ruby -I test/ test/integration/user_agent_test.rb
+- ruby -I test/ test/integration/user_device_controller_test.rb
+- ruby -I test/ test/integration/sipgate_controller_test.rb
+- rake db:drop
diff --git a/test/unit/ticket_overview_test.rb b/test/unit/ticket_overview_test.rb
index c31952e26..3f49d40ec 100644
--- a/test/unit/ticket_overview_test.rb
+++ b/test/unit/ticket_overview_test.rb
@@ -548,7 +548,8 @@ class TicketOverviewTest < ActiveSupport::TestCase
     assert_equal(result[2][:tickets].class, Array)
     assert(result[2][:tickets].empty?)
 
-    sleep 1
+    travel_to Time.zone.now + 1.second # because of mysql millitime issues
+
     ticket3 = Ticket.create(
       title: 'overview test 3',
       group: Group.lookup(name: 'OverviewTest'),