diff --git a/app/controllers/related_tags_controller.rb b/app/controllers/related_tags_controller.rb
index 99669017e..bbd170940 100644
--- a/app/controllers/related_tags_controller.rb
+++ b/app/controllers/related_tags_controller.rb
@@ -1,6 +1,7 @@
 class RelatedTagsController < ApplicationController
   respond_to :json, :xml, :js, :html, except: [:update]
   before_action :require_reportbooru_key, only: [:update]
+  skip_forgery_protection only: [:update]
 
   def show
     @query = RelatedTagQuery.new(query: params[:query], category: params[:category], user: CurrentUser.user)