diff --git a/route53-ddns.tf b/route53-ddns.tf
index 9acd6ec..e0dfc0d 100644
--- a/route53-ddns.tf
+++ b/route53-ddns.tf
@@ -56,7 +56,7 @@ resource "aws_lambda_function" "lambda" {
   description      = "DynDNS v2 API compatible front end for Route 53"
   function_name    = "route53-ddns"
   handler          = "route53_ddns.handler"
-  runtime          = "python2.7"
+  runtime          = "python3.8"
   filename         = "route53-ddns.zip"
   source_code_hash = "${base64sha256(file("route53-ddns.zip"))}"
   role             = "${aws_iam_role.role.arn}"
@@ -72,7 +72,7 @@ resource "aws_lambda_function" "authorizer" {
   description      = "Authorizer for DynDNS v2 API compatible front end for Route 53"
   function_name    = "route53-ddns-authorizer"
   handler          = "route53_ddns_authorizer.handler"
-  runtime          = "python2.7"
+  runtime          = "python3.8"
   filename         = "route53-ddns-authorizer.zip"
   source_code_hash = "${base64sha256(file("route53-ddns-authorizer.zip"))}"
   role             = "${aws_iam_role.role.arn}"