diff --git a/.travis.yml b/.travis.yml
index a34ebb8e9..3e62c6222 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,11 @@
 sudo: false
 language: ruby
 before_install:
-  - gem update --system 
+  - gem update --system
 rvm:
-  - 2.2.8
-  - 2.3.5
-  - 2.4.2
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
   - 2.5.0
   - ruby-head
 gemfile: