From aa6899cbc5ebead945f2b3d1092bf7f945285c5b Mon Sep 17 00:00:00 2001
From: Christian Mehlmauer <firefart@gmail.com>
Date: Wed, 27 Dec 2017 00:50:33 +0100
Subject: [PATCH] ruby upgrade

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index c9ef058b..bf2e9acb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,7 @@ rvm:
   - 2.4.1
   - 2.4.2
   - 2.5.0
+  - ruby-head
 before_install:
   - "env"
   - "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"