diff --git a/composer.json b/composer.json
index 296fc992..34630a68 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
         "laravel/framework": "^12.0",
         "laravel/reverb": "^1.5",
         "laravel/tinker": "^2.10.1",
-        "phpoffice/phpspreadsheet": "^4.4",
+        "phpoffice/phpspreadsheet": "^5.1.0",
         "phpoffice/phpword": "^1.4",
         "predis/predis": "^3.0",
         "pusher/pusher-php-server": "^7.2",
diff --git a/composer.lock b/composer.lock
index cfe5bfc1..85d5084b 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": "41d7e24a5319a9e6ed2db5d15c82f8de",
+    "content-hash": "10dff070ab4c13928c25b8ad857ea0d8",
     "packages": [
         {
             "name": "brick/math",
@@ -3307,16 +3307,16 @@
         },
         {
             "name": "phpoffice/phpspreadsheet",
-            "version": "4.4.0",
+            "version": "5.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPOffice/PhpSpreadsheet.git",
-                "reference": "747ccd1b443e85e0cfc0d52acf50e4d15ef959eb"
+                "reference": "fd26e45a814e94ae2aad0df757d9d1739c4bf2e0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPOffice/PhpSpreadsheet/zipball/747ccd1b443e85e0cfc0d52acf50e4d15ef959eb",
-                "reference": "747ccd1b443e85e0cfc0d52acf50e4d15ef959eb",
+                "url": "https://api.github.com/repos/PHPOffice/PhpSpreadsheet/zipball/fd26e45a814e94ae2aad0df757d9d1739c4bf2e0",
+                "reference": "fd26e45a814e94ae2aad0df757d9d1739c4bf2e0",
                 "shasum": ""
             },
             "require": {
@@ -3407,9 +3407,9 @@
             ],
             "support": {
                 "issues": "https://github.com/PHPOffice/PhpSpreadsheet/issues",
-                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/4.4.0"
+                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/5.1.0"
             },
-            "time": "2025-06-23T01:23:23+00:00"
+            "time": "2025-09-04T05:34:49+00:00"
         },
         {
             "name": "phpoffice/phpword",