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 2d13f6d9881..cf8d8c1f956 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
@@ -1757,6 +1757,14 @@
           "us-west-2" : { }
         }
       },
+      "backupstorage" : {
+        "endpoints" : {
+          "eu-west-1" : { },
+          "us-east-1" : { },
+          "us-east-2" : { },
+          "us-west-2" : { }
+        }
+      },
       "batch" : {
         "defaults" : {
           "variants" : [ {
@@ -17551,12 +17559,18 @@
             "variants" : [ {
               "hostname" : "lambda-fips.us-gov-east-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "lambda.us-gov-east-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "us-gov-west-1" : {
             "variants" : [ {
               "hostname" : "lambda-fips.us-gov-west-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "lambda.us-gov-west-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           }
         }