diff --git a/.travis.yml b/.travis.yml
index 89936a9..4af246c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,9 @@ matrix:
   include:
     - elixir: 1.3.4
       otp_release: 18.0
-    - elixir: 1.4.2
+    - elixir: 1.4.5
       otp_release: 19.3
-    - elixir: 1.5.0-rc.1
+    - elixir: 1.5.2
+      otp_release: 20.0
+    - elixir: 1.6.0
       otp_release: 20.0