diff --git a/composer.json b/composer.json
index 60c16cb8a..f0a40566d 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
         "halaxa/json-machine": "^1.1",
         "meilisearch/meilisearch-php": "^1.11",
         "monolog/monolog": "^2.0||^3.0",
-        "openspout/openspout": "^4.0",
+        "openspout/openspout": "^4.0 || ^5.0",
         "packaged/thrift": "^0.15.0",
         "php-http/discovery": "^1.0",
         "psr/clock": "^1.0",
diff --git a/composer.lock b/composer.lock
index 658e69a3f..f2650a228 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": "cdf88bcac0dc3c9c2ee777951beab6e8",
+    "content-hash": "6413ffbf91bb0a05bb101057645c6b96",
     "packages": [
         {
             "name": "async-aws/core",
@@ -1513,21 +1513,20 @@
         },
         {
             "name": "openspout/openspout",
-            "version": "v4.32.0",
+            "version": "v5.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/openspout/openspout.git",
-                "reference": "41f045c1f632e1474e15d4c7bc3abcb4a153563d"
+                "reference": "712cfe507f4c90767f4cda21947f6bca4539b7e3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/openspout/openspout/zipball/41f045c1f632e1474e15d4c7bc3abcb4a153563d",
-                "reference": "41f045c1f632e1474e15d4c7bc3abcb4a153563d",
+                "url": "https://api.github.com/repos/openspout/openspout/zipball/712cfe507f4c90767f4cda21947f6bca4539b7e3",
+                "reference": "712cfe507f4c90767f4cda21947f6bca4539b7e3",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
-                "ext-fileinfo": "*",
                 "ext-filter": "*",
                 "ext-libxml": "*",
                 "ext-xmlreader": "*",
@@ -1536,13 +1535,13 @@
             },
             "require-dev": {
                 "ext-zlib": "*",
-                "friendsofphp/php-cs-fixer": "^3.86.0",
-                "infection/infection": "^0.31.2",
-                "phpbench/phpbench": "^1.4.1",
-                "phpstan/phpstan": "^2.1.22",
-                "phpstan/phpstan-phpunit": "^2.0.7",
-                "phpstan/phpstan-strict-rules": "^2.0.6",
-                "phpunit/phpunit": "^12.3.7"
+                "friendsofphp/php-cs-fixer": "^3.91.3",
+                "infection/infection": "^0.31.9",
+                "phpbench/phpbench": "^1.4.3",
+                "phpstan/phpstan": "^2.1.33",
+                "phpstan/phpstan-phpunit": "^2.0.10",
+                "phpstan/phpstan-strict-rules": "^2.0.7",
+                "phpunit/phpunit": "^12.5.3"
             },
             "suggest": {
                 "ext-iconv": "To handle non UTF-8 CSV files (if \"php-mbstring\" is not already installed or is too limited)",
@@ -1590,7 +1589,7 @@
             ],
             "support": {
                 "issues": "https://github.com/openspout/openspout/issues",
-                "source": "https://github.com/openspout/openspout/tree/v4.32.0"
+                "source": "https://github.com/openspout/openspout/tree/v5.1.0"
             },
             "funding": [
                 {
@@ -1602,7 +1601,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-09-03T16:03:54+00:00"
+            "time": "2025-12-11T09:45:03+00:00"
         },
         {
             "name": "packaged/thrift",
diff --git a/src/adapter/etl-adapter-excel/composer.json b/src/adapter/etl-adapter-excel/composer.json
index 76c5a85f6..3c0e3aa09 100644
--- a/src/adapter/etl-adapter-excel/composer.json
+++ b/src/adapter/etl-adapter-excel/composer.json
@@ -14,7 +14,7 @@
     "require": {
         "php": "~8.3.0 || ~8.4.0 || ~8.5.0",
         "flow-php/etl": "self.version",
-        "openspout/openspout": "^4.0"
+        "openspout/openspout": "^4.0 || ^5.0"
     },
     "config": {
         "optimize-autoloader": true,
diff --git a/src/adapter/etl-adapter-excel/src/Flow/ETL/Adapter/Excel/ExcelExtractor.php b/src/adapter/etl-adapter-excel/src/Flow/ETL/Adapter/Excel/ExcelExtractor.php
index 0ffa88adf..2650710cd 100644
--- a/src/adapter/etl-adapter-excel/src/Flow/ETL/Adapter/Excel/ExcelExtractor.php
+++ b/src/adapter/etl-adapter-excel/src/Flow/ETL/Adapter/Excel/ExcelExtractor.php
@@ -137,7 +137,8 @@ private function createRowsFromCells(Row $row, int $previousRowDataCount = 0) :
         $rowData = \array_map(
             // Convert empty values to nullables if allowed
             fn (Cell $cell) => $this->convertEmptyToNull && '' === $cell->getValue() ? null : $cell->getValue(),
-            $row->getCells()
+            /** @phpstan-ignore-next-line method remove in 5.0 in favor of public property */
+            method_exists($row, 'getCells') ? $row->getCells() : $row->cells
         );
 
         // Expand columns to the size of the previous row