diff --git a/.travis.yml b/.travis.yml
index e0eb093..bbf3de4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,15 @@
-language: ruby
+dist: trusty
 sudo: false
 
+language: ruby
 rvm:
   - 2.5.0
-env:
-  - APP_ENV=test
 
-bundler_args: "--without development"
+addons:
+  postgresql: "9.6"
 before_install:
   - "psql -c 'create database fixer_test;' -U postgres"
+
+bundler_args: "--without development"
+env:
+  - APP_ENV=test
diff --git a/Gemfile.lock b/Gemfile.lock
index 4d48d59..016479d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,9 +17,9 @@ GEM
       minitest (~> 5.0)
     mustermann (1.0.2)
     oj (3.5.0)
-    ox (2.8.4)
+    ox (2.9.0)
     parallel (1.12.1)
-    parser (2.5.0.3)
+    parser (2.5.0.4)
       ast (~> 2.4.0)
     pg (1.0.0)
     powerpack (0.1.1)
@@ -35,8 +35,8 @@ GEM
       rack (>= 1.0, < 3)
     rainbow (3.0.0)
     raindrops (0.19.0)
-    rake (12.3.0)
-    rubocop (0.53.0)
+    rake (12.3.1)
+    rubocop (0.54.0)
       parallel (~> 1.10)
       parser (>= 2.5)
       powerpack (~> 0.1)