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 066c9e4c373..32213f4bebc 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
@@ -9168,6 +9168,7 @@
           "ap-south-1" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
+          "ap-southeast-3" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "outposts-fips.ca-central-1.amazonaws.com",
@@ -11556,9 +11557,11 @@
           "ap-east-1" : { },
           "ap-northeast-1" : { },
           "ap-northeast-2" : { },
+          "ap-northeast-3" : { },
           "ap-south-1" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
+          "ap-southeast-3" : { },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "servicediscovery-fips.ca-central-1.amazonaws.com",