diff --git a/.travis.yml b/.travis.yml
index 5ba1ef1..cb2681f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 language: ruby
 cache: bundler
 rvm:
-  - 2.2.2
+  - 2.2.4
 services:
   - memcached
 before_script: