diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index e1987a1..bcebf01 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -9,14 +9,12 @@ jobs:
       fail-fast: true
       matrix:
         os: [ ubuntu-latest ]
-        php: [ 8.5, 8.4, 8.3 ]
-        laravel: [ 12.*, 11.* ]
+        php: [ 8.5, 8.4 ]
+        laravel: [ 12.* ]
         dependency-version: [ prefer-stable ]
         include:
           - laravel: 12.*
             testbench: 10.*
-          - laravel: 11.*
-            testbench: 9.*
           # L13 matrix entry ready for when laravel/nova supports it:
           # - laravel: 13.*
           #   testbench: 11.*
diff --git a/composer.json b/composer.json
index 82c9093..ef8c63e 100644
--- a/composer.json
+++ b/composer.json
@@ -9,13 +9,13 @@
         "html"
     ],
     "require": {
-        "php": "^8.3",
+        "php": "^8.4",
         "ext-json": "*",
         "laravel/nova": "^4.25 || ^5.0"
     },
     "require-dev": {
         "interaction-design-foundation/coding-standard": "^1.0-RC1",
-        "orchestra/testbench-core": "^8.0 || ^9.0 || ^10.0 || ^11.0",
+        "orchestra/testbench-core": "^10.0 || ^11.0",
         "phpunit/phpunit": "^10.5 || ^11.0"
     },
     "repositories": [