diff --git a/.travis.yml b/.travis.yml
index 10c70f9..a4889f8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,14 +4,14 @@ rvm:
   - 1.8.7
   - 1.9.3
   - 2.0.0
-  - 2.1.3
+  - 2.1.5
 
 matrix:
   allow_failures:
     - rvm: 1.8.7
     - rvm: 2.0.0
       env: PUPPET_VERSION="2.7"
-    - rvm: 2.1.3
+    - rvm: 2.1.5
       env: PUPPET_VERSION="2.7"
 
 before_install:
@@ -32,6 +32,7 @@ env:
   - PUPPET_VERSION="3.5"
   - PUPPET_VERSION="3.6"
   - PUPPET_VERSION="3.7"
+  - PUPPET_VERSION="4.0"
 
 branches:
   only: