diff --git a/.travis.yml b/.travis.yml
index c56cdaa..94f7e52 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,10 @@ matrix:
         - php: 7.3
         - php: 7.4
         - php: 8.0
+        - php: 8.1
+        - php: 8.2
+        - php: 8.3
+        - php: 8.4
 
 cache:
   directories: