diff --git a/.travis.yml b/.travis.yml
index 72a3f67..c9fd2cc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,15 @@
 sudo: false
 language: ruby
 cache: bundler
+dist: xenial
 
 matrix:
   include:
     - rvm: 2.2.10
-    - rvm: 2.3.7
-    - rvm: 2.4.4
-    - rvm: 2.5.1
+    - rvm: 2.3.8
+    - rvm: 2.4.5
+    - rvm: 2.5.4
+    - rvm: 2.6
     - rvm: ruby-head
   allow_failures:
     - rvm: ruby-head