diff --git a/.travis.yml b/.travis.yml
index a8dbba1..757b5f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ php:
 - 7.1
 - 7.2
 - 7.3
+- 7.4
 
 before_script:
 - sudo apt-get install libxml2-utils
diff --git a/Model/Product/Attribute.php b/Model/Product/Attribute.php
index 21a1491..5c3030d 100644
--- a/Model/Product/Attribute.php
+++ b/Model/Product/Attribute.php
@@ -28,6 +28,11 @@ class Attribute implements \Mygento\ImportExport\Api\AttributeInterface
      */
     private $repository;
 
+    /**
+     * @var \Magento\Catalog\Api\ProductAttributeRepositoryInterface
+     */
+    private $productAttributeRepository;
+
     /**
      * @param \Magento\Catalog\Model\Product\Attribute\OptionManagement $repository
      * @param \Magento\Eav\Api\Data\AttributeOptionLabelInterfaceFactory $optionLabelFactory
@@ -36,11 +41,13 @@ class Attribute implements \Mygento\ImportExport\Api\AttributeInterface
     public function __construct(
         \Magento\Catalog\Model\Product\Attribute\OptionManagement $repository,
         \Magento\Eav\Api\Data\AttributeOptionLabelInterfaceFactory $optionLabelFactory,
-        \Magento\Eav\Api\Data\AttributeOptionInterfaceFactory $optionFactory
+        \Magento\Eav\Api\Data\AttributeOptionInterfaceFactory $optionFactory,
+        \Magento\Catalog\Api\ProductAttributeRepositoryInterface $productAttributeRepository
     ) {
         $this->repository = $repository;
         $this->optionLabelFactory = $optionLabelFactory;
         $this->optionFactory = $optionFactory;
+        $this->productAttributeRepository = $productAttributeRepository;
     }
 
     /**
@@ -84,7 +91,6 @@ public function createDropdownAttributeOptions(
     }
 
     /**
-     * TODO
      * @param \Magento\ImportExport\Model\Import\AbstractSource $source
      * @param array $attibutes
      */
@@ -92,6 +98,34 @@ public function createMultiselectAttributeOptions(
         \Magento\ImportExport\Model\Import\AbstractSource $source,
         array $attibutes
     ) {
+        $source->rewind();
+
+        while ($source->valid()) {
+            $row = $source->current();
+
+            foreach ($attibutes as $attributeCode) {
+                $attribute = $this->productAttributeRepository->get($attributeCode);
+
+                if ($attribute->getFrontendInput() == 'multiselect') {
+                    $options = $this->getAttributeOptions($attributeCode);
+                    $newOptions = explode(\Magento\ImportExport\Model\Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR, $row[$attributeCode]);
+
+                    foreach ($newOptions as $newOption) {
+                        if (!isset($newOption) || !strlen(trim($newOption))) {
+                            continue;
+                        }
+                        if (in_array($newOption, $options)) {
+                            continue;
+                        }
+                        $this->createAttributeOption($attributeCode, $row[$attributeCode]);
+                    }
+
+                }
+            }
+
+            $source->next();
+        }
+
         unset($source);
         unset($attibutes);
     }
diff --git a/README.md b/README.md
index 8e14e2e..18a4210 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,4 @@ Magento 2 Import Export Array Adapter
 ## Configuration
 
 ## Compability
-The module is tested on magento version 2.3.x
+The module is tested on magento version 2.4.x
diff --git a/composer.json b/composer.json
index e41adb4..0af11b1 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "mygento/module-import-export",
     "type": "magento2-module",
-    "version": "2.3.1",
+    "version": "2.4.0",
     "license": "OSL-3.0",
     "homepage": "https://github.com/mygento/module-import-export",
     "description": "Magento 2 import export array adapter",
@@ -23,12 +23,11 @@
         "mygento"
     ],
     "require": {
-        "magento/module-catalog-import-export": "101.0.*",
-        "magento/module-configurable-import-export": "100.3.*"
+        "magento/module-catalog-import-export": "101.1.*",
+        "magento/module-configurable-import-export": "100.4.*"
     },
     "require-dev": {
-      "mygento/coding-standard": "~2.13.5",
-      "magento/magento-coding-standard": "~4.0.0"
+      "mygento/coding-standard": "~2.14.0-beta1"
     },
     "autoload": {
         "files": [
diff --git a/etc/module.xml b/etc/module.xml
index e07fdc8..47ff1c6 100644
--- a/etc/module.xml
+++ b/etc/module.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="Mygento_ImportExport" setup_version="2.3.1" />
+    <module name="Mygento_ImportExport" />
 </config>