diff --git a/.travis.yml b/.travis.yml
index 41d3946..2749209 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,12 +2,17 @@ language: elixir
 elixir:
   - 1.0.5
   - 1.1.1
-  - 1.2.0
+  - 1.2.5
+otp_release:
+  - 17.5
+  - 18.2.1
 env:
   global:
     - MIX_ENV=test
 before_install:
   - git submodule update --init --recursive
+before_script:
+  - mix local.hex --force
 script:
   - "mix do deps.get, deps.compile, compile --warnings-as-errors, coveralls.travis"
 notifications: