diff --git a/.travis.yml b/.travis.yml
index 6bd1a55..c0856d8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,12 @@ matrix:
       elixir: 1.6
     - otp_release: 21.0
       elixir: 1.6
+    - otp_release: 19.3
+      elixir: 1.7
+    - otp_release: 20.0
+      elixir: 1.7
+    - otp_release: 21.0
+      elixir: 1.7
 sudo: false
 after_script:
   - MIX_ENV=docs mix deps.get