diff --git a/.travis.yml b/.travis.yml
index 8bbed0c0..e124fdf2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ rvm:
   - 2.1.9
   - 2.2.6
   - 2.3.3
-  - 2.4
+  - 2.4.0
   - ruby-head
   - jruby-9.0.5.0
 jdk: