diff --git a/docs/capabilities.md b/docs/capabilities.md
index 4acdb42744..489ec34161 100644
--- a/docs/capabilities.md
+++ b/docs/capabilities.md
@@ -85,6 +85,7 @@ title: Capabilities
 ## 13
 * `direct-mention-flag` - The conversation list populates the boolean `unreadMentionDirect` when the user was mentioned directly (ignoring @all mentions) since their last visit
 * `notification-calls` - Whether the API to opt out of call notifications is available
+* `conversation-permissions` - Whether the default and custom permissions can be set for attendees.
 
 ## 14
 * `chat-unread` - Whether the API to mark a conversation as unread is available
diff --git a/lib/Capabilities.php b/lib/Capabilities.php
index 5a8e6dfb14..c4742a38d2 100644
--- a/lib/Capabilities.php
+++ b/lib/Capabilities.php
@@ -98,6 +98,7 @@ class Capabilities implements IPublicCapability {
 				'clear-history',
 				'direct-mention-flag',
 				'notification-calls',
+				'conversation-permissions',
 			],
 			'config' => [
 				'attachments' => [
diff --git a/tests/php/CapabilitiesTest.php b/tests/php/CapabilitiesTest.php
index 1096fe915e..7edc4f080d 100644
--- a/tests/php/CapabilitiesTest.php
+++ b/tests/php/CapabilitiesTest.php
@@ -95,6 +95,7 @@ class CapabilitiesTest extends TestCase {
 			'clear-history',
 			'direct-mention-flag',
 			'notification-calls',
+			'conversation-permissions',
 		];
 	}