diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 3141f8437..ea7a6a810 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -20,7 +20,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
   alias Pleroma.Web.Federator
-  alias Pleroma.Workers.TransmogrifierWorker
 
   import Ecto.Query
 
@@ -968,25 +967,6 @@ def perform(:user_upgrade, user) do
     |> Repo.update_all([])
   end
 
-  def upgrade_user_from_ap_id(ap_id) do
-    with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
-         {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
-         {:ok, user} <- update_user(user, data) do
-      {:ok, _pid} = Task.start(fn -> ActivityPub.pinned_fetch_task(user) end)
-      TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
-      {:ok, user}
-    else
-      %User{} = user -> {:ok, user}
-      e -> e
-    end
-  end
-
-  defp update_user(user, data) do
-    user
-    |> User.remote_user_changeset(data)
-    |> User.update_and_set_cache()
-  end
-
   def maybe_fix_user_url(%{"url" => url} = data) when is_map(url) do
     Map.put(data, "url", url["href"])
   end
diff --git a/test/pleroma/web/activity_pub/transmogrifier_test.exs b/test/pleroma/web/activity_pub/transmogrifier_test.exs
index 6b4636d22..588f46296 100644
--- a/test/pleroma/web/activity_pub/transmogrifier_test.exs
+++ b/test/pleroma/web/activity_pub/transmogrifier_test.exs
@@ -8,7 +8,6 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
 
   alias Pleroma.Activity
   alias Pleroma.Object
-  alias Pleroma.Tests.ObanHelpers
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.ActivityPub.Utils
@@ -339,69 +338,6 @@ test "Updates of Notes are handled" do
     end
   end
 
-  describe "user upgrade" do
-    test "it upgrades a user to activitypub" do
-      user =
-        insert(:user, %{
-          nickname: "rye@niu.moe",
-          local: false,
-          ap_id: "https://niu.moe/users/rye",
-          follower_address: User.ap_followers(%User{nickname: "rye@niu.moe"})
-        })
-
-      user_two = insert(:user)
-      Pleroma.FollowingRelationship.follow(user_two, user, :follow_accept)
-
-      {:ok, activity} = CommonAPI.post(user, %{status: "test"})
-      {:ok, unrelated_activity} = CommonAPI.post(user_two, %{status: "test"})
-      assert "http://localhost:4001/users/rye@niu.moe/followers" in activity.recipients
-
-      user = User.get_cached_by_id(user.id)
-      assert user.note_count == 1
-
-      {:ok, user} = Transmogrifier.upgrade_user_from_ap_id("https://niu.moe/users/rye")
-      ObanHelpers.perform_all()
-
-      assert user.ap_enabled
-      assert user.note_count == 1
-      assert user.follower_address == "https://niu.moe/users/rye/followers"
-      assert user.following_address == "https://niu.moe/users/rye/following"
-
-      user = User.get_cached_by_id(user.id)
-      assert user.note_count == 1
-
-      activity = Activity.get_by_id(activity.id)
-      assert user.follower_address in activity.recipients
-
-      assert %{
-               "url" => [
-                 %{
-                   "href" =>
-                     "https://cdn.niu.moe/accounts/avatars/000/033/323/original/fd7f8ae0b3ffedc9.jpeg"
-                 }
-               ]
-             } = user.avatar
-
-      assert %{
-               "url" => [
-                 %{
-                   "href" =>
-                     "https://cdn.niu.moe/accounts/headers/000/033/323/original/850b3448fa5fd477.png"
-                 }
-               ]
-             } = user.banner
-
-      refute "..." in activity.recipients
-
-      unrelated_activity = Activity.get_by_id(unrelated_activity.id)
-      refute user.follower_address in unrelated_activity.recipients
-
-      user_two = User.get_cached_by_id(user_two.id)
-      assert User.following?(user_two, user)
-      refute "..." in User.following(user_two)
-    end
-  end
-
   describe "actor rewriting" do
     test "it fixes the actor URL property to be a proper URI" do
       data = %{