Update .travis.yml

gogainda · web-flow · commit 19874f1fb9a2 · 2021-02-20T12:38:57.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,6 +7,7 @@ rvm:
   - 2.6.6
   - 2.7.2
   - 3.0.0
+  - truffleruby-head
 env:
   - CI=true
 gemfile:
