dependency update

Author: codemasher

.travis.yml

@@ -7,6 +7,9 @@ env:
 matrix:
   include:
     - php: 7.4
+    - php: nightly
+  allow_failures:
+    - php: nightly
 
 before_install:
   - pecl channel-update pecl.php.net

composer.json

@@ -20,12 +20,12 @@
 		"source": "https://github.com/chillerlan/php-settings-container"
 	},
 	"require": {
-		"php": "^7.4",
+		"php": "^7.4 || ^8.0",
 		"ext-json": "*"
 	},
 	"require-dev": {
-		"phan/phan": "^3.0",
-		"phpunit/phpunit": "^9.2"
+		"phan/phan": "^3.2.2",
+		"phpunit/phpunit": "9.4"
 	},
 	"autoload": {
 		"psr-4": {