diff --git a/.travis.yml b/.travis.yml
index 93c4af7..5a6487e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 rvm:
   - 2.0.0
   - 2.1.10
-  - 2.2.6
-  - 2.3.3
+  - 2.2.7
+  - 2.3.4
   - 2.4.1
 gemfile:
   - gemfiles/Gemfile-activemodel-3.0.x