diff --git a/lib/mix/tasks/pleroma/user.ex b/lib/mix/tasks/pleroma/user.ex
index 7eaa49836..3a5382d0f 100644
--- a/lib/mix/tasks/pleroma/user.ex
+++ b/lib/mix/tasks/pleroma/user.ex
@@ -8,6 +8,7 @@ defmodule Mix.Tasks.Pleroma.User do
   alias Mix.Tasks.Pleroma.Common
   alias Pleroma.User
   alias Pleroma.UserInviteToken
+  alias Pleroma.Web.OAuth
 
   @shortdoc "Manages Pleroma users"
   @moduledoc """
@@ -49,6 +50,10 @@ defmodule Mix.Tasks.Pleroma.User do
 
       mix pleroma.user delete_activities NICKNAME
 
+  ## Sign user out from all applications (delete user's OAuth tokens and authorizations).
+
+      mix pleroma.user sign_out NICKNAME
+
   ## Deactivate or activate the user's account.
 
       mix pleroma.user toggle_activated NICKNAME
@@ -407,6 +412,20 @@ defmodule Mix.Tasks.Pleroma.User do
     end
   end
 
+  def run(["sign_out", nickname]) do
+    Common.start_pleroma()
+
+    with %User{} = user <- User.get_cached_by_nickname(nickname) do
+      OAuth.Token.delete_user_tokens(user)
+      OAuth.Authorization.delete_user_authorizations(user)
+
+      Common.shell_info("#{nickname} signed out from all apps.")
+    else
+      _ ->
+        Common.shell_error("No local user #{nickname}")
+    end
+  end
+
   defp set_moderator(user, value) do
     info_cng = User.Info.admin_api_update(user.info, %{is_moderator: value})