diff --git a/app/models/heritage.rb b/app/models/heritage.rb
index 3539efc5..4251ce50 100644
--- a/app/models/heritage.rb
+++ b/app/models/heritage.rb
@@ -50,7 +50,7 @@ def build_resources
         add_resource("AWS::Lambda::Function", "ScheduleHandler") do |j|
           j.Handler "index.handler"
           j.Role get_attr("ScheduleHandlerRole", "Arn")
-          j.Runtime "nodejs12.x"
+          j.Runtime "nodejs18.x"
           j.Timeout 60
           j.Code do |j|
             j.ZipFile schedule_handler_code