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 b405235b338..94f3cc15ef3 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
@@ -23936,8 +23936,18 @@
       },
       "simspaceweaver" : {
         "endpoints" : {
-          "us-gov-east-1" : { },
-          "us-gov-west-1" : { }
+          "us-gov-east-1" : {
+            "credentialScope" : {
+              "region" : "us-gov-east-1"
+            },
+            "hostname" : "simspaceweaver.us-gov-east-1.amazonaws.com"
+          },
+          "us-gov-west-1" : {
+            "credentialScope" : {
+              "region" : "us-gov-west-1"
+            },
+            "hostname" : "simspaceweaver.us-gov-west-1.amazonaws.com"
+          }
         }
       },
       "sms" : {