.travis.yml in squib-0.11.0 vs .travis.yml in squib-0.12.0

@@ -1,16 +1,18 @@
 dist: trusty
 language: ruby
-sudo: false # taking advantage of container-based infrastructure
+sudo: true # need this for libgirepository1.0-dev
+# sudo: false # taking advantage of container-based infrastructure
 cache: bundler # cache bundled gems from build to build
 
 addons:
   apt:
     packages:
       - libgirepository1.0-dev # for gobject-introspection
 
 rvm:
   - 2.2
-  - 2.3.0
+  - 2.3.3
+  - 2.4.0-preview3
 matrix:
   allow_failures:
-    - rvm: 2.3.0
+    - rvm: 2.4.0-preview3