diff --git a/src/Uuid.php b/src/Uuid.php
index 241dac4..fa07aa5 100644
--- a/src/Uuid.php
+++ b/src/Uuid.php
@@ -95,6 +95,31 @@ class Uuid implements UuidInterface
      */
     const VALID_PATTERN = '^[0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12}$';
 
+    /**
+     * Version 1 (time-based) UUID object constant identifier
+     */
+    const UUID_TYPE_TIME = 1;
+
+    /**
+     * Version 2 (identifier-based) UUID object constant identifier
+     */
+    const UUID_TYPE_IDENTIFIER = 2;
+
+    /**
+     * Version 3 (name-based and hashed with MD5) UUID object constant identifier
+     */
+    const UUID_TYPE_HASH_MD5 = 3;
+
+    /**
+     * Version 4 (random) UUID object constant identifier
+     */
+    const UUID_TYPE_RANDOM = 4;
+
+    /**
+     * Version 5 (name-based and hashed with SHA1) UUID object constant identifier
+     */
+    const UUID_TYPE_HASH_SHA1 = 5;
+
     /**
      * The factory to use when creating UUIDs.
      * @var UuidFactoryInterface
diff --git a/tests/UuidTest.php b/tests/UuidTest.php
index d4273fa..144f0a8 100644
--- a/tests/UuidTest.php
+++ b/tests/UuidTest.php
@@ -1968,4 +1968,49 @@ class UuidTest extends TestCase
 
         $this->assertEquals('b6c54489-38a0-5f50-a60a-fd8d76219cae', $uuid->toString());
     }
+
+    /**
+     * @depends testGetVersionForVersion1
+     */
+    public function testUuidVersionConstantForVersion1()
+    {
+        $uuid = Uuid::fromString('ff6f8cb0-c57d-11e1-9b21-0800200c9a66');
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_TIME);
+    }
+
+    /**
+     * @depends testGetVersionForVersion2
+     */
+    public function testUuidVersionConstantForVersion2()
+    {
+        $uuid = Uuid::fromString('6fa459ea-ee8a-2ca4-894e-db77e160355e');
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_IDENTIFIER);
+    }
+
+    /**
+     * @depends testGetVersionForVersion3
+     */
+    public function testUuidVersionConstantForVersion3()
+    {
+        $uuid = Uuid::fromString('6fa459ea-ee8a-3ca4-894e-db77e160355e');
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_HASH_MD5);
+    }
+
+    /**
+     * @depends testGetVersionForVersion4
+     */
+    public function testUuidVersionConstantForVersion4()
+    {
+        $uuid = Uuid::fromString('6fabf0bc-603a-42f2-925b-d9f779bd0032');
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_RANDOM);
+    }
+
+    /**
+     * @depends testGetVersionForVersion5
+     */
+    public function testUuidVersionConstantForVersion5()
+    {
+        $uuid = Uuid::fromString('886313e1-3b8a-5372-9b90-0c9aee199e5d');
+        $this->assertEquals($uuid->getVersion(), Uuid::UUID_TYPE_HASH_SHA1);
+    }
 }