diff --git a/composer.json b/composer.json
index f944c89c..41d2ba36 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         }
     ],
     "require": {
-        "php": "^8.1",
+        "php": "^8.3",
         "silverstripe/framework": "^6",
         "silverstripe/cms": "^6",
         "silverstripe/versioned": "^3"
diff --git a/tests/php/Tasks/LinkFieldMigrationTaskTest.php b/tests/php/Tasks/LinkFieldMigrationTaskTest.php
index b03e5edc..6fdda841 100644
--- a/tests/php/Tasks/LinkFieldMigrationTaskTest.php
+++ b/tests/php/Tasks/LinkFieldMigrationTaskTest.php
@@ -3,8 +3,8 @@
 namespace SilverStripe\LinkField\Tests\Tasks;
 
 use LogicException;
+use ReflectionClass;
 use ReflectionMethod;
-use ReflectionProperty;
 use RuntimeException;
 use SilverStripe\Core\Convert;
 use SilverStripe\Core\Environment;
@@ -1015,9 +1015,8 @@ public function testCheckForBrokenLinks(bool $hasBrokenLinks): void
     public function testCheckForBrokenLinksWithHtmlOutput(bool $hasBrokenLinks): void
     {
         // Make sure we get HTML output
-        $reflectionCli = new ReflectionProperty(Environment::class, 'isCliOverride');
-        $reflectionCli->setAccessible(true);
-        $reflectionCli->setValue(false);
+        $reflectionEnvironment = new ReflectionClass(Environment::class);
+        $reflectionEnvironment->setStaticPropertyValue('isCliOverride', false);
         try {
             $brokenLinkFixtures = $this->getBrokenLinkFixtures($hasBrokenLinks);
             $this->startCapturingOutput();
@@ -1062,7 +1061,7 @@ public function testCheckForBrokenLinksWithHtmlOutput(bool $hasBrokenLinks): voi
             }
         } finally {
             // Make sure we unset the CLI override
-            $reflectionCli->setValue(null);
+            $reflectionEnvironment->setStaticPropertyValue('isCliOverride', null);
         }
     }