diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c10ea76..07ea6a9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,12 +31,19 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu]
-        php: [7.4, 7.3, 7.2]
-        laravel: [^8, ^7, ^6]
+        php: [8.1, 8.0 7.4, 7.3, 7.2]
+        laravel: [^9, ^8, ^7, ^6]
         exclude:
           # Laravel 8 requires php 7.3+, so exclude all PHP versions prior to 7.3
           - laravel: ^8
             php: 7.2
+          # Laravel 9 requires php ^8.0.2, so exclude all PHP versions prior to 8.0.2
+          - laravel: ^9
+            php: 7.2
+          - laravel: ^9
+            php: 7.3
+          - laravel: ^9
+            php: 7.4
     env:
       ROLLBAR_TOKEN: "ad865e76e7fb496fab096ac07b1dbabb"
     name: Laravel ${{ matrix.laravel }} on PHP ${{ matrix.php }} (${{ matrix.os }})
diff --git a/composer.json b/composer.json
index 97c0c95..b43adfa 100644
--- a/composer.json
+++ b/composer.json
@@ -22,16 +22,16 @@
         }
     ],
     "require": {
-        "php": ">=7.2",
-        "illuminate/support": "^6.0|^7.0|^8.0",
+        "php": ">=7.2|^8.0",
+        "illuminate/support": "^6.0|^7.0|^8.0|^9.0",
         "rollbar/rollbar": "^2"
     },
     "require-dev": {
-        "orchestra/testbench": "^4.0|^5.0|^6.0",
+        "orchestra/testbench": "^4.0|^5.0|^6.0|^7.0",
         "mockery/mockery": "^1",
         "php-coveralls/php-coveralls": "^2.2",
         "squizlabs/php_codesniffer": "3.*",
-        "phpunit/phpunit": "^8"
+        "phpunit/phpunit": "^8|^9.1"
     },
     "autoload": {
         "psr-4": {