Use erlang-21 on master branch

noxdafox · noxdafox · commit 4f4ae3a0a6f5 · 2018-12-18T23:28:49.000+02:00
Some dependencies (namely Ra) require erlang &gt;= 21.0.

Signed-off-by: Matteo Cafasso &lt;noxdafox@gmail.com&gt;
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,7 @@ dist: xenial
 language: elixir
 elixir: '1.6.6'
 otp_release:
-  - '20.0'
+  - '21.0'
 script: make tests
 branches:
   only:
