diff --git a/.travis.yml b/.travis.yml
index 9a6b417..0fb37ed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ language: php
 php:
  - "7.4"
  - "8.0"
+ - "8.1"
 
 before_script:
  - composer self-update