diff --git a/lib/generators/geocoder/maxmind/templates/migration/geolite_city.rb b/lib/generators/geocoder/maxmind/templates/migration/geolite_city.rb
index 73c93e100408d87eb9a1310e32c6503cf98a131b..bf87520620fbcbedd3fae64f8b342bf047c0a673 100644
--- a/lib/generators/geocoder/maxmind/templates/migration/geolite_city.rb
+++ b/lib/generators/geocoder/maxmind/templates/migration/geolite_city.rb
@@ -5,7 +5,9 @@ class GeocoderMaxmindGeoliteCity < ActiveRecord::Migration
       t.column :end_ip_num, :bigint, null: false
       t.column :loc_id, :bigint, null: false
     end
+    add_index :maxmind_geolite_city_blocks, :loc_id
     add_index :maxmind_geolite_city_blocks, :start_ip_num, unique: true
+    add_index :maxmind_geolite_city_blocks, [:end_ip_num, :start_ip_num], unique: true, name: 'index_maxmind_geolite_city_blocks_on_end_ip_num_range'
 
     create_table :maxmind_geolite_city_location, id: false do |t|
       t.column :loc_id, :bigint, null: false