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 38ce6b97ea92..545e27080105 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
@@ -13704,9 +13704,27 @@
         },
         "iotfleetwise": {
           "endpoints": {
-            "ap-south-1": {},
-            "eu-central-1": {},
-            "us-east-1": {}
+            "ap-south-1": {
+              "variants": [
+                {
+                  "tags": ["dualstack"]
+                }
+              ]
+            },
+            "eu-central-1": {
+              "variants": [
+                {
+                  "tags": ["dualstack"]
+                }
+              ]
+            },
+            "us-east-1": {
+              "variants": [
+                {
+                  "tags": ["dualstack"]
+                }
+              ]
+            }
           }
         },
         "iotsecuredtunneling": {