diff --git a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
index d0d5de51f1a..2bfd13117c8 100644
--- a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
+++ b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
@@ -2836,6 +2836,7 @@
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
+          "ap-southeast-4" : { },
           "ca-central-1" : { },
           "eu-central-1" : { },
           "eu-central-2" : { },
@@ -4263,6 +4264,7 @@
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
+          "ap-southeast-4" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "datasync-fips.ca-central-1.amazonaws.com",
@@ -6625,6 +6627,7 @@
             } ]
           },
           "ap-southeast-3" : { },
+          "ap-southeast-4" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "fms-fips.ca-central-1.amazonaws.com",
@@ -6958,6 +6961,7 @@
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
+          "ap-southeast-4" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "fsx-fips.ca-central-1.amazonaws.com",