.travis.yml in cloudflare-4.1.3 vs .travis.yml in cloudflare-4.2.0

@@ -19,9 +19,12 @@
     - rvm: truffleruby
     - rvm: ruby-head
     - rvm: 2.6
       env: CLOUDFLARE_PROXY=http://localhost:3128
       before_script: sudo service squid start
+    - rvm: jruby-head
+      env: JRUBY_OPTS="--debug -X+O" CLOUDFLARE_PROXY=http://localhost:3128
+      before_script: sudo service squid start
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head
     - rvm: truffleruby