Update travis config.

mikebronner · mikebronner · commit 9bf44e18dbd4 · 2019-08-29T08:02:44.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,8 @@
 language: php
 
 php:
-    - 7.1.3
     - 7.2
+    - 7.3
 
 before_script:
     - travis_retry composer self-update
