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 ec1c58acd7c..4a866057efa 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
@@ -23178,13 +23178,13 @@
           },
           "us-gov-east-1" : {
             "variants" : [ {
-              "hostname" : "servicediscovery-fips.us-gov-east-1.amazonaws.com",
-              "tags" : [ "dualstack", "fips" ]
-            }, {
               "hostname" : "servicediscovery-fips.us-gov-east-1.amazonaws.com",
               "tags" : [ "fips" ]
             }, {
-              "hostname" : "servicediscovery.us-gov-east-1.amazonaws.com",
+              "hostname" : "servicediscovery-fips.us-gov-east-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "servicediscovery.us-gov-east-1.api.aws",
               "tags" : [ "dualstack" ]
             } ]
           },
@@ -23197,13 +23197,13 @@
           },
           "us-gov-west-1" : {
             "variants" : [ {
-              "hostname" : "servicediscovery-fips.us-gov-west-1.amazonaws.com",
-              "tags" : [ "dualstack", "fips" ]
-            }, {
               "hostname" : "servicediscovery-fips.us-gov-west-1.amazonaws.com",
               "tags" : [ "fips" ]
             }, {
-              "hostname" : "servicediscovery.us-gov-west-1.amazonaws.com",
+              "hostname" : "servicediscovery-fips.us-gov-west-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "servicediscovery.us-gov-west-1.api.aws",
               "tags" : [ "dualstack" ]
             } ]
           },
@@ -24857,6 +24857,11 @@
           "us-isob-east-1" : { }
         }
       },
+      "outposts" : {
+        "endpoints" : {
+          "us-isob-east-1" : { }
+        }
+      },
       "ram" : {
         "endpoints" : {
           "us-isob-east-1" : { }