diff --git a/composer.json b/composer.json
index 288f2ac0e..519bc3ccf 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,7 @@
         "nettrine/migrations": "^v0.8",
         "nextras/mail-panel": "^v2.5",
         "php-http/guzzle7-adapter": "^1.0",
-        "phpoffice/phpspreadsheet": "^2.0",
+        "phpoffice/phpspreadsheet": "^3.6",
         "ramsey/uuid": "^4.2",
         "sentry/sentry": "^3.4",
         "skaut/dependent-select-box": "dev-master",
diff --git a/composer.lock b/composer.lock
index cef15f9ef..eee34e5eb 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": "13768fda98c0ffb8eafea7c52c66f677",
+    "content-hash": "c2b1b06b789be9d28f7e7287b76c5a47",
     "packages": [
         {
             "name": "beberlei/assert",
@@ -3296,16 +3296,16 @@
         },
         {
             "name": "maennchen/zipstream-php",
-            "version": "3.1.0",
+            "version": "3.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/maennchen/ZipStream-PHP.git",
-                "reference": "b8174494eda667f7d13876b4a7bfef0f62a7c0d1"
+                "reference": "6187e9cc4493da94b9b63eb2315821552015fca9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/maennchen/ZipStream-PHP/zipball/b8174494eda667f7d13876b4a7bfef0f62a7c0d1",
-                "reference": "b8174494eda667f7d13876b4a7bfef0f62a7c0d1",
+                "url": "https://api.github.com/repos/maennchen/ZipStream-PHP/zipball/6187e9cc4493da94b9b63eb2315821552015fca9",
+                "reference": "6187e9cc4493da94b9b63eb2315821552015fca9",
                 "shasum": ""
             },
             "require": {
@@ -3361,19 +3361,15 @@
             ],
             "support": {
                 "issues": "https://github.com/maennchen/ZipStream-PHP/issues",
-                "source": "https://github.com/maennchen/ZipStream-PHP/tree/3.1.0"
+                "source": "https://github.com/maennchen/ZipStream-PHP/tree/3.1.1"
             },
             "funding": [
                 {
                     "url": "https://github.com/maennchen",
                     "type": "github"
-                },
-                {
-                    "url": "https://opencollective.com/zipstream",
-                    "type": "open_collective"
                 }
             ],
-            "time": "2023-06-21T14:59:35+00:00"
+            "time": "2024-10-10T12:33:01+00:00"
         },
         {
             "name": "markbaker/complex",
@@ -5959,16 +5955,16 @@
         },
         {
             "name": "phpoffice/phpspreadsheet",
-            "version": "2.2.2",
+            "version": "3.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPOffice/PhpSpreadsheet.git",
-                "reference": "ffbcee68069b073bff07a71eb321dcd9f2763513"
+                "reference": "bce5db99872f9613121c3ad033c43318a3789396"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPOffice/PhpSpreadsheet/zipball/ffbcee68069b073bff07a71eb321dcd9f2763513",
-                "reference": "ffbcee68069b073bff07a71eb321dcd9f2763513",
+                "url": "https://api.github.com/repos/PHPOffice/PhpSpreadsheet/zipball/bce5db99872f9613121c3ad033c43318a3789396",
+                "reference": "bce5db99872f9613121c3ad033c43318a3789396",
                 "shasum": ""
             },
             "require": {
@@ -6002,7 +5998,7 @@
                 "phpcompatibility/php-compatibility": "^9.3",
                 "phpstan/phpstan": "^1.1",
                 "phpstan/phpstan-phpunit": "^1.0",
-                "phpunit/phpunit": "^9.6 || ^10.5",
+                "phpunit/phpunit": "^10.5",
                 "squizlabs/php_codesniffer": "^3.7",
                 "tecnickcom/tcpdf": "^6.5"
             },
@@ -6057,9 +6053,9 @@
             ],
             "support": {
                 "issues": "https://github.com/PHPOffice/PhpSpreadsheet/issues",
-                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/2.2.2"
+                "source": "https://github.com/PHPOffice/PhpSpreadsheet/tree/3.6.0"
             },
-            "time": "2024-08-08T02:31:26+00:00"
+            "time": "2024-12-08T15:04:12+00:00"
         },
         {
             "name": "phpoption/phpoption",
@@ -13509,5 +13505,5 @@
     "platform-dev": {
         "ext-pdo": "*"
     },
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.6.0"
 }