diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index dfc25ca9..c172d462 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -10,6 +10,7 @@ class ApplicationController < ActionController::Base
   rescue_from Pundit::NotAuthorizedError, with: :render_not_authorized
 
   def current_user
+    ::NewRelic::Agent.add_custom_attributes({ external_user_id: session[:external_user_id], session_user_id: session[:user_id] })
     @current_user ||= ExternalUser.find_by(id: session[:external_user_id]) || login_from_session || login_from_other_sources
   end
 
diff --git a/app/controllers/concerns/lti.rb b/app/controllers/concerns/lti.rb
index 0068afe1..4ba93615 100644
--- a/app/controllers/concerns/lti.rb
+++ b/app/controllers/concerns/lti.rb
@@ -104,7 +104,7 @@ module Lti
   private :return_to_consumer
 
   def send_score(exercise_id, score, user_id)
-    ::NewRelic::Agent.add_custom_parameters({ score: score, session: session })
+    ::NewRelic::Agent.add_custom_attributes({ score: score, session: session })
     fail(Error, "Score #{score} must be between 0 and #{MAXIMUM_SCORE}!") unless (0..MAXIMUM_SCORE).include?(score)
 
     if session[:consumer_id]
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 03e08da2..141b47ee 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -344,7 +344,7 @@ class ExercisesController < ApplicationController
   end
 
   def transmit_lti_score
-    ::NewRelic::Agent.add_custom_parameters({ submission: @submission.id, normalized_score: @submission.normalized_score })
+    ::NewRelic::Agent.add_custom_attributes({ submission: @submission.id, normalized_score: @submission.normalized_score })
     response = send_score(@submission.exercise_id, @submission.normalized_score, @submission.user_id)
 
     if response[:status] == 'success'
diff --git a/app/models/submission.rb b/app/models/submission.rb
index 94ba46d6..69a48307 100644
--- a/app/models/submission.rb
+++ b/app/models/submission.rb
@@ -34,7 +34,7 @@ class Submission < ActiveRecord::Base
   end
 
   def normalized_score
-    ::NewRelic::Agent.add_custom_parameters({ unnormalized_score: score })
+    ::NewRelic::Agent.add_custom_attributes({ unnormalized_score: score })
     if !score.nil? && !exercise.maximum_score.nil? && (exercise.maximum_score > 0)
       score / exercise.maximum_score
     else