.travis.yml in http-protocol-0.10.1 vs .travis.yml in http-protocol-0.11.0

@@ -1,23 +1,21 @@
 language: ruby
 sudo: required
 dist: xenial
 cache: bundler
 
-before_script:
-  - gem update --system
-  - gem install bundler
-
 matrix:
   include:
     - rvm: 2.3
     - rvm: 2.4
     - rvm: 2.5
     - rvm: 2.6
+    - rvm: truffleruby
     - rvm: jruby-head
       env: JRUBY_OPTS="--debug -X+O"
     - rvm: ruby-head
     - rvm: rbx-3
   allow_failures:
+    - rvm: truffleruby
     - rvm: ruby-head
     - rvm: jruby-head
     - rvm: rbx-3