diff --git a/.travis.yml b/.travis.yml
index b22df55..97f8b9e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,6 +17,12 @@ matrix:
       elixir: 1.5
     - otp_release: 20.2
       elixir: 1.6
+    - otp_release: 20.2
+      elixir: 1.7
+    - otp_release: 21.0
+      elixir: 1.7
+    - otp_release: 22.0
+      elixir: 1.7
 sudo: false
 after_script:
   - MIX_ENV=test mix coveralls.travis