diff --git a/.travis.yml b/.travis.yml
index 2961c51f..0518dca8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ language: php
 php:
     - 7.1
     - 7.2
+    - 7.3
 
 before_install:
     # turn off XDebug