diff --git a/app/Console/Commands/UpgradeCommand.php b/app/Console/Commands/UpgradeCommand.php
index 45c127767..e04d1a50c 100644
--- a/app/Console/Commands/UpgradeCommand.php
+++ b/app/Console/Commands/UpgradeCommand.php
@@ -51,7 +51,7 @@ class UpgradeCommand extends Command
             }
 
             if (is_null($this->option('user'))) {
-                $userDetails = posix_getpwuid(fileowner('public'));
+                $userDetails = function_exists('posix_getpwuid') ? posix_getpwuid(fileowner('public')) : [];
                 $user = $userDetails['name'] ?? 'www-data';
 
                 if (!$this->confirm("Your webserver user has been detected as <fg=blue>[{$user}]:</> is this correct?", true)) {
@@ -67,7 +67,7 @@ class UpgradeCommand extends Command
             }
 
             if (is_null($this->option('group'))) {
-                $groupDetails = posix_getgrgid(filegroup('public'));
+                $groupDetails = function_exists('posix_getgrgid') ? posix_getgrgid(filegroup('public')) : [];
                 $group = $groupDetails['name'] ?? 'www-data';
 
                 if (!$this->confirm("Your webserver group has been detected as <fg=blue>[{$group}]:</> is this correct?", true)) {
diff --git a/composer.json b/composer.json
index 829ec4d72..612d70119 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,6 @@
         "ext-mbstring": "*",
         "ext-pdo": "*",
         "ext-pdo_mysql": "*",
-        "ext-posix": "*",
         "ext-zip": "*",
         "aws/aws-sdk-php": "~3.288.1",
         "doctrine/dbal": "~3.6.0",
diff --git a/composer.lock b/composer.lock
index 30fdecfd0..72bdbf5ff 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d7166d309ca3cb996fe990be81644539",
+    "content-hash": "413a3ca00228de8de6f6d74ab817b5d6",
     "packages": [
         {
             "name": "aws/aws-crt-php",
@@ -11037,7 +11037,6 @@
         "ext-mbstring": "*",
         "ext-pdo": "*",
         "ext-pdo_mysql": "*",
-        "ext-posix": "*",
         "ext-zip": "*"
     },
     "platform-dev": [],