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 0a8fd94de3c..0fbdbc15d2c 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
@@ -30679,6 +30679,11 @@
         "endpoints" : {
           "us-isob-east-1" : { }
         }
+      },
+      "xray" : {
+        "endpoints" : {
+          "us-isob-east-1" : { }
+        }
       }
     }
   }, {