.travis.yml in assembly-objectfile-1.8.2 vs .travis.yml in assembly-objectfile-1.8.3

@@ -1,9 +1,10 @@
 
 language: ruby
 rvm:
   - 2.2.5
   - 2.3.1
+  - 2.5.3
 addons:
   apt:
     packages:
       - libimage-exiftool-perl
 before_script: