diff --git a/.travis.yml b/.travis.yml
index 8dacae7..4cc9c93 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,14 @@ php:
   - 5.5
   - 5.6
   - 7.0
+  - 7.1
+  - 7.2
+  - 7.3
   - hhvm
+  - nightly
+matrix:
+  allow_failures:
+    - php: hhvm
+    - php: nightly
 script:
   - make test