diff --git a/.travis.yml b/.travis.yml
index 90cd95d..44d65ac 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,10 @@
 ---
 language: ruby
 rvm:
-  - 2.4.0
+  - 2.2
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
 script:
   - rspec