.travis.yml in file_scanner-2.0.1 vs .travis.yml in file_scanner-2.0.2

@@ -3,6 +3,6 @@
 rvm:
   - 2.1.2
   - 2.2.2
   - 2.3.0
   - 2.4.0
-before_install: gem install bundler -v 1.15.2
+before_install: gem install bundler -v 1.15.3