.travis.yml in acumatica-0.3.0 vs .travis.yml in acumatica-0.4.0

@@ -1,10 +1,10 @@
 language: ruby
 
 rvm:
-  - 2.2
-  - 2.3
   - 2.4
+  - 2.5
+  - 2.6
 
 env:
   - ACUMATICA_URL=https://acumatica.example.org
 
 notifications: