diff --git a/composer.json b/composer.json
index f882dcc..c45c119 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,8 @@
     "php": "^8"
   },
   "require-dev": {
-    "phpunit/phpunit": "^11"
+    "phpunit/phpunit": "^11",
+    "phpoption/phpoption": "^1"
   },
   "autoload": {
     "psr-4": {
diff --git a/composer.lock b/composer.lock
index cc4e0a7..5ebc5d5 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": "8b1b205cce046bd609215dd01d4ab9b7",
+    "content-hash": "9c9d70d95d369f37fa95a10637a56a58",
     "packages": [],
     "packages-dev": [
         {
@@ -243,6 +243,81 @@
             },
             "time": "2022-02-21T01:04:05+00:00"
         },
+        {
+            "name": "phpoption/phpoption",
+            "version": "1.9.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/schmittjoh/php-option.git",
+                "reference": "e3fac8b24f56113f7cb96af14958c0dd16330f54"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/e3fac8b24f56113f7cb96af14958c0dd16330f54",
+                "reference": "e3fac8b24f56113f7cb96af14958c0dd16330f54",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20 || ^10.5.28"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "1.9-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpOption\\": "src/PhpOption/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Johannes M. Schmitt",
+                    "email": "schmittjoh@gmail.com",
+                    "homepage": "https://github.com/schmittjoh"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                }
+            ],
+            "description": "Option Type for PHP",
+            "keywords": [
+                "language",
+                "option",
+                "php",
+                "type"
+            ],
+            "support": {
+                "issues": "https://github.com/schmittjoh/php-option/issues",
+                "source": "https://github.com/schmittjoh/php-option/tree/1.9.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpoption/phpoption",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-07-20T21:41:07+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "11.0.5",
diff --git a/src/Option.php b/src/Option.php
index 74960f2..8923d5a 100644
--- a/src/Option.php
+++ b/src/Option.php
@@ -82,8 +82,8 @@ readonly class Option
     public static function of(mixed $value): self
     {
         return match (true) {
-            // TODO: can we do this check without requiring this package?
-            // $value instanceof PhpOption => $value->isDefined() ? self::Some($value->get()) : self::None(),
+            is_object($value) && is_a($value, 'PhpOption\Option') =>
+                $value->isDefined() ? self::Some($value->get()) : self::None(),
             default                     => new self($value),
         };
     }
diff --git a/tests/OptionTest.php b/tests/OptionTest.php
index d183932..19c4b7f 100644
--- a/tests/OptionTest.php
+++ b/tests/OptionTest.php
@@ -10,6 +10,7 @@ namespace Test;
 
 use BitBadger\InspiredByFSharp\Option;
 use InvalidArgumentException;
+use PhpOption\{None, Some};
 use PHPUnit\Framework\Attributes\TestDox;
 use PHPUnit\Framework\TestCase;
 
@@ -64,6 +65,21 @@ class OptionTest extends TestCase
         $this->assertEquals('test', $it->get(), 'The value was not assigned correctly');
     }
 
+    #[TestDox('Of succeeds with PhpOption\Some')]
+    public function testOfSucceedsWithPhpOptionSome(): void
+    {
+        $it = Option::of(Some::create('something'));
+        $this->assertTrue(Option::isSome($it), 'A "Some" PhpOption should have created a "Some" option');
+        $this->assertEquals('something', $it->get(), 'The value was not assigned correctly');
+    }
+
+    #[TestDox('Of succeeds with PhpOption\None')]
+    public function testOfSucceedsWithPhpOptionNone(): void
+    {
+        $it = Option::of(None::create());
+        $this->assertTrue(Option::isNone($it), 'A "None" PhpOption should have created a "None" option');
+    }
+
     #[TestDox('IsNone succeeds with None')]
     public function testIsNoneSucceedsWithNone(): void
     {