diff --git a/lib/federation/activity_pub/types/actors.ex b/lib/federation/activity_pub/types/actors.ex
index b08cccd47..773850676 100644
--- a/lib/federation/activity_pub/types/actors.ex
+++ b/lib/federation/activity_pub/types/actors.ex
@@ -98,6 +98,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Actors do
       "actor" => actor_url,
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => to_string(type),
+        "deleted" => DateTime.utc_now(),
         "id" => target_actor_url
       },
       "id" => target_actor_url <> "/delete",
diff --git a/lib/federation/activity_pub/types/comments.ex b/lib/federation/activity_pub/types/comments.ex
index e510a537f..fbdd58a81 100644
--- a/lib/federation/activity_pub/types/comments.ex
+++ b/lib/federation/activity_pub/types/comments.ex
@@ -84,6 +84,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Comments do
       "actor" => actor.url,
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => "Note",
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "id" => url <> "/delete",
diff --git a/lib/federation/activity_pub/types/discussions.ex b/lib/federation/activity_pub/types/discussions.ex
index 2644fb7ef..f1a30a127 100644
--- a/lib/federation/activity_pub/types/discussions.ex
+++ b/lib/federation/activity_pub/types/discussions.ex
@@ -117,6 +117,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
           "actor" => actor.url,
           "object" => %{
             "type" => "Tombstone",
+            "formerType" => "Note",
+            "deleted" => DateTime.utc_now(),
             "url" => url
           },
           "id" => url <> "/delete",
diff --git a/lib/federation/activity_pub/types/events.ex b/lib/federation/activity_pub/types/events.ex
index f9ec1f13a..3b18912ee 100644
--- a/lib/federation/activity_pub/types/events.ex
+++ b/lib/federation/activity_pub/types/events.ex
@@ -84,6 +84,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
       "actor" => actor.url,
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => "Event",
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "to" => [actor.url <> "/followers", "https://www.w3.org/ns/activitystreams#Public"],
diff --git a/lib/federation/activity_pub/types/posts.ex b/lib/federation/activity_pub/types/posts.ex
index ed7642fbd..07345994f 100644
--- a/lib/federation/activity_pub/types/posts.ex
+++ b/lib/federation/activity_pub/types/posts.ex
@@ -79,6 +79,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Posts do
       "type" => "Delete",
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => "Article",
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "id" => url <> "/delete",
diff --git a/lib/federation/activity_pub/types/resources.ex b/lib/federation/activity_pub/types/resources.ex
index a6d965922..f38d2c8ac 100644
--- a/lib/federation/activity_pub/types/resources.ex
+++ b/lib/federation/activity_pub/types/resources.ex
@@ -150,7 +150,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
   @spec delete(Resource.t(), Actor.t(), boolean, map()) ::
           {:ok, ActivityStream.t(), Actor.t(), Resource.t()} | {:error, Ecto.Changeset.t()}
   def delete(
-        %Resource{url: url, actor: %Actor{url: group_url, members_url: members_url}} = resource,
+        %Resource{url: url, type: type, actor: %Actor{url: group_url, members_url: members_url}} =
+          resource,
         %Actor{url: actor_url} = actor,
         _local,
         _additionnal
@@ -163,6 +164,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
       "type" => "Delete",
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => if(type == :folder, do: "ResourceCollection", else: "Document"),
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "id" => url <> "/delete",
diff --git a/lib/federation/activity_pub/types/todo_lists.ex b/lib/federation/activity_pub/types/todo_lists.ex
index c0b288afa..7202038ac 100644
--- a/lib/federation/activity_pub/types/todo_lists.ex
+++ b/lib/federation/activity_pub/types/todo_lists.ex
@@ -57,6 +57,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.TodoLists do
       "type" => "Delete",
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => "TodoList",
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "id" => url <> "/delete",
diff --git a/lib/federation/activity_pub/types/todos.ex b/lib/federation/activity_pub/types/todos.ex
index 0e97835e1..5c8d34579 100644
--- a/lib/federation/activity_pub/types/todos.ex
+++ b/lib/federation/activity_pub/types/todos.ex
@@ -97,6 +97,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Todos do
       "type" => "Delete",
       "object" => %{
         "type" => "Tombstone",
+        "formerType" => "Todo",
+        "deleted" => DateTime.utc_now(),
         "id" => url
       },
       "id" => "#{url}/delete",