Index: .travis.yml
===================================================================
--- .travis.yml	(revision 43560)
+++ .travis.yml	(working copy)
@@ -14,6 +14,7 @@
   include:
   - php: 7.1
     env: WP_TRAVISCI=travis:js
+  - php: 7.3
   - php: 7.2
   - php: 7.1
   - php: 7.0
@@ -31,6 +32,7 @@
   - php: nightly
   allow_failures:
   - php: nightly
+  - php: 7.3
 before_install:
 - |
   if [[ "$WP_TRAVISCI" == "travis:phpunit" ]]; then