diff --git a/.travis.yml b/.travis.yml
index 2fc1215a8..f9378a751 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,11 +2,13 @@ language: ruby
 cache: bundler
 sudo: false
 
+before_install: gem install bundler
+
 rvm:
-  - 2.2.8
-  - 2.3.1
-  - 2.4.2
-  - 2.5.0
+  - 2.2.10
+  - 2.3.7
+  - 2.4.4
+  - 2.5.1
 
 gemfile:
   - gemfiles/rails_4_2.gemfile