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 2846c824796..12485155eaf 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
@@ -16401,6 +16401,15 @@
           }
         }
       },
+      "tnb" : {
+        "endpoints" : {
+          "ap-southeast-2" : { },
+          "eu-central-1" : { },
+          "eu-west-3" : { },
+          "us-east-1" : { },
+          "us-west-2" : { }
+        }
+      },
       "transcribe" : {
         "defaults" : {
           "protocols" : [ "https" ],