diff --git a/.travis.yml b/.travis.yml
index 35eb805..9cceac4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ gemfile:
 rvm:
   - "2.3.7"
   - "2.4.4"
-  - "2.5.1"
+  - "2.5.5"
 
 script: 'bundle exec rspec'