diff --git a/.travis.yml b/.travis.yml
index e9bd951..3d0ee22 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,18 +6,14 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
   - hhvm
   - nightly
 
-sudo: false
-
 matrix:
   allow_failures:
     - php: hhvm
 
-before_install:
-    - composer self-update
-
 install:
     - composer require "php-http/guzzle6-adapter:^1.0" --no-update
     - composer --prefer-source install