diff --git a/db/migrate/20240304085436_add_submission_id_index_to_awarded_points.rb b/db/migrate/20240304085436_add_submission_id_index_to_awarded_points.rb
new file mode 100644
index 000000000..a1cef6d51
--- /dev/null
+++ b/db/migrate/20240304085436_add_submission_id_index_to_awarded_points.rb
@@ -0,0 +1,5 @@
+class AddSubmissionIdIndexToAwardedPoints < ActiveRecord::Migration[6.1]
+  def change
+    add_index :awarded_points, :submission_id
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 56e2d4d26..32be56cfd 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2024_02_28_101929) do
+ActiveRecord::Schema.define(version: 2024_03_04_085436) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -77,6 +77,7 @@
     t.boolean "awarded_after_soft_deadline", default: false, null: false
     t.index ["course_id", "user_id", "name"], name: "index_awarded_points_on_course_id_and_user_id_and_name", unique: true
     t.index ["course_id", "user_id", "submission_id"], name: "index_awarded_points_on_course_id_and_user_id_and_submission_id"
+    t.index ["submission_id"], name: "index_awarded_points_on_submission_id"
     t.index ["user_id", "submission_id", "name"], name: "index_awarded_points_on_user_id_and_submission_id_and_name", unique: true
   end