diff --git a/.travis.yml b/.travis.yml
index 8e1084c..cfe8cea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,9 @@ cache: bundler
 sudo: false
 rvm:
   - 2.0.0
-  - 2.1
-  - 2.2.5
-  - 2.3.1
+  - 2.1.10
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
 script: bundle exec rspec spec