diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38bb96c..e185513 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 - Add `anonymizeAt` and `anonymizedAt` to `Envelope`
 - Add anonymize action to `Envelope`
 - Add `AccountEmailSendersEndpoint` and `AccountEmailSender` resource
+- Add `approvedAt`, `deniedAt` and `denailMessage` to `Identification`
+- Add `Identification.approve` endpoint and `Identification.deny` endpoint
 
 ### Changed
 - Change `EnvelopeDocument.file` to nullable
diff --git a/src/Endpoint/IdentificationsEndpoint.php b/src/Endpoint/IdentificationsEndpoint.php
index 1ef54dd..bf6e4f5 100644
--- a/src/Endpoint/IdentificationsEndpoint.php
+++ b/src/Endpoint/IdentificationsEndpoint.php
@@ -10,6 +10,9 @@
 
 /**
  * @extends ResourceEndpoint<Identification>
+ * @method Identification get(string $id)
+ * @method Identification create(array $body)
+ * @method Identification update(string $id, array $body)
  */
 final class IdentificationsEndpoint extends ResourceEndpoint
 {
@@ -20,4 +23,17 @@ public function __construct(DigiSign $parent)
     {
         parent::__construct($parent, '/api/identifications', Identification::class);
     }
+
+    public function approve(Identification|string $id): Identification
+    {
+        return $this->makeResource($this->postRequest('/{id}/approve', ['id' => $id]));
+    }
+
+    /**
+     * @param mixed[] $body
+     */
+    public function deny(Identification|string $id, array $body = []): Identification
+    {
+        return $this->makeResource($this->postRequest('/{id}/deny', ['id' => $id, 'json' => $body]));
+    }
 }
diff --git a/src/Resource/Identification.php b/src/Resource/Identification.php
index 84a5cde..bb95d58 100644
--- a/src/Resource/Identification.php
+++ b/src/Resource/Identification.php
@@ -19,4 +19,7 @@ class Identification extends BaseResource
     public ?DateTime $startedAt;
     public ?DateTime $openedAt;
     public ?DateTime $completedAt;
+    public ?DateTime $approvedAt;
+    public ?DateTime $deniedAt;
+    public ?string $denialMessage;
 }
diff --git a/tests/Endpoint/IdentificationsEndpointTest.php b/tests/Endpoint/IdentificationsEndpointTest.php
index e9e993f..9019b1f 100644
--- a/tests/Endpoint/IdentificationsEndpointTest.php
+++ b/tests/Endpoint/IdentificationsEndpointTest.php
@@ -14,6 +14,18 @@ public function testCRUD(): void
         self::assertCrudRequests(self::endpoint(), '/api/identifications');
     }
 
+    public function testApprove(): void
+    {
+        self::endpoint()->approve('foo');
+        self::assertLastRequest('POST', '/api/identifications/foo/approve');
+    }
+
+    public function testDeny(): void
+    {
+        self::endpoint()->deny('foo');
+        self::assertLastRequest('POST', '/api/identifications/foo/deny');
+    }
+
     protected static function endpoint(): IdentificationsEndpoint
     {
         return self::dgs()->identifications();