diff --git a/.travis.yml b/.travis.yml
index 6ad3343a1..f35d4b7d8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,17 @@ install:
 script: ./vendor/bin/phpunit
 
 jobs:
+  allow_failures:
+    - php: nightly
+
   include:
+    -   stage: Test
+        php: nightly
+        before_install:
+            - composer config platform.php 7.4.99
+        install:
+            - travis_retry composer update --prefer-dist
+
     - stage: Test
       env: COVERAGE
       before_script:
diff --git a/composer.json b/composer.json
index 2e1a892eb..f0b6a4a21 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         {"name": "Johannes Schmitt", "email": "schmittjoh@gmail.com"}
     ],
     "require": {
-        "php": "^7.1.3"
+        "php": "^7.1.3 || ^8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7.0",