Update .travis.yml

arubacao · mheap · commit a2ef23117fba · 2018-12-11T11:19:12.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,7 @@ php:
   - '7.0'
   - '7.1'
   - '7.2'
+  - '7.3'
 
 before_script:
   - composer install
