diff --git a/codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json b/codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json
index a21f840ad345..8029f7b9c906 100644
--- a/codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json
+++ b/codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json
@@ -22871,6 +22871,23 @@
             "cn-north-1": {}
           }
         },
+        "iottwinmaker": {
+          "endpoints": {
+            "api-cn-north-1": {
+              "credentialScope": {
+                "region": "cn-north-1"
+              },
+              "hostname": "api.iottwinmaker.cn-north-1.amazonaws.com.cn"
+            },
+            "cn-north-1": {},
+            "data-cn-north-1": {
+              "credentialScope": {
+                "region": "cn-north-1"
+              },
+              "hostname": "data.iottwinmaker.cn-north-1.amazonaws.com.cn"
+            }
+          }
+        },
         "kafka": {
           "endpoints": {
             "cn-north-1": {},