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 89937fd1ac2..da18dcca156 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
@@ -24351,12 +24351,34 @@
             "credentialScope" : {
               "region" : "us-gov-east-1"
             },
+            "hostname" : "sso.us-gov-east-1.amazonaws.com",
+            "variants" : [ {
+              "hostname" : "sso.us-gov-east-1.amazonaws.com",
+              "tags" : [ "fips" ]
+            } ]
+          },
+          "us-gov-east-1-fips" : {
+            "credentialScope" : {
+              "region" : "us-gov-east-1"
+            },
+            "deprecated" : true,
             "hostname" : "sso.us-gov-east-1.amazonaws.com"
           },
           "us-gov-west-1" : {
             "credentialScope" : {
               "region" : "us-gov-west-1"
             },
+            "hostname" : "sso.us-gov-west-1.amazonaws.com",
+            "variants" : [ {
+              "hostname" : "sso.us-gov-west-1.amazonaws.com",
+              "tags" : [ "fips" ]
+            } ]
+          },
+          "us-gov-west-1-fips" : {
+            "credentialScope" : {
+              "region" : "us-gov-west-1"
+            },
+            "deprecated" : true,
             "hostname" : "sso.us-gov-west-1.amazonaws.com"
           }
         }