diff --git a/.travis.yml b/.travis.yml
index ff544ca..849fcda 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
   - hhvm # ignore errors, see below
 
 # lock distro so new future defaults will not break the build