diff --git a/keyserver/src/creators/role-creator.js b/keyserver/src/creators/role-creator.js
--- a/keyserver/src/creators/role-creator.js
+++ b/keyserver/src/creators/role-creator.js
@@ -83,6 +83,7 @@
   [threadPermissions.EDIT_THREAD_NAME]: true,
   [threadPermissions.EDIT_THREAD_COLOR]: true,
   [threadPermissions.EDIT_THREAD_DESCRIPTION]: true,
+  [threadPermissions.EDIT_THREAD_AVATAR]: true,
   [threadPermissions.CREATE_SUBCHANNELS]: true,
   [threadPermissions.ADD_MEMBERS]: true,
 };
@@ -140,6 +141,8 @@
     DESCENDANT + threadPermissions.EDIT_THREAD_COLOR;
   const descendantEditThreadDescription =
     DESCENDANT + threadPermissions.EDIT_THREAD_DESCRIPTION;
+  const descendantEditThreadAvatar =
+    DESCENDANT + threadPermissions.EDIT_THREAD_AVATAR;
   const topLevelDescendantCreateSubchannels =
     TOP_LEVEL_DESCENDANT + threadPermissions.CREATE_SUBCHANNELS;
   const topLevelDescendantCreateSidebars =
@@ -161,6 +164,7 @@
     [threadPermissions.EDIT_THREAD_NAME]: true,
     [threadPermissions.EDIT_THREAD_COLOR]: true,
     [threadPermissions.EDIT_THREAD_DESCRIPTION]: true,
+    [threadPermissions.EDIT_THREAD_AVATAR]: true,
     [threadPermissions.CREATE_SUBCHANNELS]: true,
     [threadPermissions.CREATE_SIDEBARS]: true,
     [threadPermissions.ADD_MEMBERS]: true,
@@ -176,6 +180,7 @@
     [descendantEditThreadName]: true,
     [descendantEditThreadColor]: true,
     [descendantEditThreadDescription]: true,
+    [descendantEditThreadAvatar]: true,
     [topLevelDescendantCreateSubchannels]: true,
     [topLevelDescendantCreateSidebars]: true,
     [descendantAddMembers]: true,
@@ -210,6 +215,7 @@
       [threadPermissions.EDIT_THREAD_NAME]: true,
       [threadPermissions.EDIT_THREAD_COLOR]: true,
       [threadPermissions.EDIT_THREAD_DESCRIPTION]: true,
+      [threadPermissions.EDIT_THREAD_AVATAR]: true,
       [threadPermissions.ADD_MEMBERS]: true,
       [threadPermissions.EDIT_PERMISSIONS]: true,
       [threadPermissions.REMOVE_MEMBERS]: true,
diff --git a/keyserver/src/database/migration-config.js b/keyserver/src/database/migration-config.js
--- a/keyserver/src/database/migration-config.js
+++ b/keyserver/src/database/migration-config.js
@@ -276,6 +276,7 @@
     },
   ],
   [23, updateRolesAndPermissionsForAllThreads],
+  [24, updateRolesAndPermissionsForAllThreads],
 ]);
 const newDatabaseVersion: number = Math.max(...migrations.keys());
 
diff --git a/lib/types/thread-types.js b/lib/types/thread-types.js
--- a/lib/types/thread-types.js
+++ b/lib/types/thread-types.js
@@ -101,6 +101,7 @@
   LEAVE_THREAD: 'leave_thread',
   REACT_TO_MESSAGE: 'react_to_message',
   EDIT_MESSAGE: 'edit_message',
+  EDIT_THREAD_AVATAR: 'edit_thread_avatar',
 });
 export type ThreadPermission = $Values<typeof threadPermissions>;
 export function assertThreadPermissions(
@@ -125,7 +126,8 @@
       ourThreadPermissions === 'change_role' ||
       ourThreadPermissions === 'leave_thread' ||
       ourThreadPermissions === 'react_to_message' ||
-      ourThreadPermissions === 'edit_message',
+      ourThreadPermissions === 'edit_message' ||
+      ourThreadPermissions === 'edit_thread_avatar',
     'string is not threadPermissions enum',
   );
   return ourThreadPermissions;