diff --git a/.travis.yml b/.travis.yml
index 29e780f3..d8e0c168 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ php:
   - 7.2
   - 7.3
   - 7.4
+  - nightly
 
 cache:
   directories: