diff --git a/app/controllers/index_controller.rb b/app/controllers/index_controller.rb
index 1417139d6..40c364f17 100644
--- a/app/controllers/index_controller.rb
+++ b/app/controllers/index_controller.rb
@@ -11,4 +11,9 @@ def index
   # def routing_error
   #   fail ActionController::RoutingError
   # end
+
+  def method_not_allowed
+    response.set_header('Allow', 'POST')
+    render json: { "message": "This endpoint only supports POST requests." }.to_json, status: :method_not_allowed
+  end
 end
diff --git a/config/routes.rb b/config/routes.rb
index d811383cf..d4c621b75 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,7 @@
 Rails.application.routes.draw do
   post "/graphql", to: "graphql#execute"
+  get "/graphql", to: "index#method_not_allowed"
+
   root :to => 'index#index'
 
   # authentication