diff --git a/.travis.yml b/.travis.yml
index 19ff64c..86a6369 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,19 +1,14 @@
 language: ruby
 
 rvm:
-  - 2.1.10
-  - 2.2.5
-  - 2.3.1
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
 
 gemfile:
   - gemfiles/activerecord_4_2.gemfile
   - gemfiles/activerecord_5_1.gemfile
 
-matrix:
-  exclude:
-    - gemfile: gemfiles/activerecord_5_1.gemfile
-      rvm: 2.1.10
-
 addons:
   postgresql: 9.3