diff --git a/.travis.yml b/.travis.yml
index 716cd99..6a1f143 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,6 +29,11 @@ matrix:
       env:
         - SYMFONY_REQUIRE="5.1.*"
         - PHPUNIT_VERSION="9.*"
+    - php: nightly
+      env:
+        - SYMFONY_REQUIRE="5.1.*"
+        - PHPUNIT_VERSION="9.*"
+        - STABILITY=dev
 
 before_install:
     - phpenv config-rm xdebug.ini || echo "xDebug not disabled"
diff --git a/composer.json b/composer.json
index dbe322c..889ba5e 100644
--- a/composer.json
+++ b/composer.json
@@ -11,9 +11,9 @@
     }
   ],
   "require": {
-    "php": "^7.1",
+    "php": "^7.1 || 8.0",
     "symfony/framework-bundle": "^3.4 || ^4.3 || ^5.0",
-    "doctrine/dbal": "^2.9,>=2.9.3",
+    "doctrine/dbal": "^2.9,>=2.9.3 || ^3.0",
     "doctrine/doctrine-bundle": "^1.11 || ^2.0"
   },
   "require-dev": {