diff --git a/clients/client-sso/src/endpoint/ruleset.ts b/clients/client-sso/src/endpoint/ruleset.ts
index 91d0e6695cd2..1ba6bbe4a53f 100644
--- a/clients/client-sso/src/endpoint/ruleset.ts
+++ b/clients/client-sso/src/endpoint/ruleset.ts
@@ -6,25 +6,27 @@ import { RuleSetObject } from "@smithy/types";
    or see "smithy.rules#endpointRuleSet"
    in codegen/sdk-codegen/aws-models/sso.json */
 
-const q="required",
-r="fn",
-s="argv",
-t="ref";
+const s="required",
+t="fn",
+u="argv",
+v="ref";
 const a="isSet",
 b="tree",
 c="error",
 d="endpoint",
 e="PartitionResult",
-f={[q]:false,"type":"String"},
-g={[q]:true,"default":false,"type":"Boolean"},
-h={[t]:"Endpoint"},
-i={[r]:"booleanEquals",[s]:[{[t]:"UseFIPS"},true]},
-j={[r]:"booleanEquals",[s]:[{[t]:"UseDualStack"},true]},
-k={},
-l={[r]:"booleanEquals",[s]:[true,{[r]:"getAttr",[s]:[{[t]:e},"supportsFIPS"]}]},
-m={[r]:"booleanEquals",[s]:[true,{[r]:"getAttr",[s]:[{[t]:e},"supportsDualStack"]}]},
-n=[i],
-o=[j],
-p=[{[t]:"Region"}];
-const _data={version:"1.0",parameters:{Region:f,UseDualStack:g,UseFIPS:g,Endpoint:f},rules:[{conditions:[{[r]:a,[s]:[h]}],type:b,rules:[{conditions:n,error:"Invalid Configuration: FIPS and custom endpoint are not supported",type:c},{conditions:o,error:"Invalid Configuration: Dualstack and custom endpoint are not supported",type:c},{endpoint:{url:h,properties:k,headers:k},type:d}]},{conditions:[{[r]:a,[s]:p}],type:b,rules:[{conditions:[{[r]:"aws.partition",[s]:p,assign:e}],type:b,rules:[{conditions:[i,j],type:b,rules:[{conditions:[l,m],type:b,rules:[{endpoint:{url:"https://portal.sso-fips.{Region}.{PartitionResult#dualStackDnsSuffix}",properties:k,headers:k},type:d}]},{error:"FIPS and DualStack are enabled, but this partition does not support one or both",type:c}]},{conditions:n,type:b,rules:[{conditions:[l],type:b,rules:[{endpoint:{url:"https://portal.sso-fips.{Region}.{PartitionResult#dnsSuffix}",properties:k,headers:k},type:d}]},{error:"FIPS is enabled but this partition does not support FIPS",type:c}]},{conditions:o,type:b,rules:[{conditions:[m],type:b,rules:[{endpoint:{url:"https://portal.sso.{Region}.{PartitionResult#dualStackDnsSuffix}",properties:k,headers:k},type:d}]},{error:"DualStack is enabled but this partition does not support DualStack",type:c}]},{endpoint:{url:"https://portal.sso.{Region}.{PartitionResult#dnsSuffix}",properties:k,headers:k},type:d}]}]},{error:"Invalid Configuration: Missing Region",type:c}]};
+f="getAttr",
+g={[s]:false,"type":"String"},
+h={[s]:true,"default":false,"type":"Boolean"},
+i={[v]:"Endpoint"},
+j={[t]:"booleanEquals",[u]:[{[v]:"UseFIPS"},true]},
+k={[t]:"booleanEquals",[u]:[{[v]:"UseDualStack"},true]},
+l={},
+m={[t]:"booleanEquals",[u]:[true,{[t]:f,[u]:[{[v]:e},"supportsFIPS"]}]},
+n={[v]:e},
+o={[t]:"booleanEquals",[u]:[true,{[t]:f,[u]:[n,"supportsDualStack"]}]},
+p=[j],
+q=[k],
+r=[{[v]:"Region"}];
+const _data={version:"1.0",parameters:{Region:g,UseDualStack:h,UseFIPS:h,Endpoint:g},rules:[{conditions:[{[t]:a,[u]:[i]}],type:b,rules:[{conditions:p,error:"Invalid Configuration: FIPS and custom endpoint are not supported",type:c},{conditions:q,error:"Invalid Configuration: Dualstack and custom endpoint are not supported",type:c},{endpoint:{url:i,properties:l,headers:l},type:d}]},{conditions:[{[t]:a,[u]:r}],type:b,rules:[{conditions:[{[t]:"aws.partition",[u]:r,assign:e}],type:b,rules:[{conditions:[j,k],type:b,rules:[{conditions:[m,o],type:b,rules:[{endpoint:{url:"https://portal.sso-fips.{Region}.{PartitionResult#dualStackDnsSuffix}",properties:l,headers:l},type:d}]},{error:"FIPS and DualStack are enabled, but this partition does not support one or both",type:c}]},{conditions:p,type:b,rules:[{conditions:[m],type:b,rules:[{conditions:[{[t]:"stringEquals",[u]:["aws-us-gov",{[t]:f,[u]:[n,"name"]}]}],endpoint:{url:"https://portal.sso.{Region}.amazonaws.com",properties:l,headers:l},type:d},{endpoint:{url:"https://portal.sso-fips.{Region}.{PartitionResult#dnsSuffix}",properties:l,headers:l},type:d}]},{error:"FIPS is enabled but this partition does not support FIPS",type:c}]},{conditions:q,type:b,rules:[{conditions:[o],type:b,rules:[{endpoint:{url:"https://portal.sso.{Region}.{PartitionResult#dualStackDnsSuffix}",properties:l,headers:l},type:d}]},{error:"DualStack is enabled but this partition does not support DualStack",type:c}]},{endpoint:{url:"https://portal.sso.{Region}.{PartitionResult#dnsSuffix}",properties:l,headers:l},type:d}]}]},{error:"Invalid Configuration: Missing Region",type:c}]};
 export const ruleSet: RuleSetObject = _data;
diff --git a/codegen/sdk-codegen/aws-models/sso.json b/codegen/sdk-codegen/aws-models/sso.json
index bb342fd2b339..d301f0fe1756 100644
--- a/codegen/sdk-codegen/aws-models/sso.json
+++ b/codegen/sdk-codegen/aws-models/sso.json
@@ -760,6 +760,31 @@
                           ],
                           "type": "tree",
                           "rules": [
+                            {
+                              "conditions": [
+                                {
+                                  "fn": "stringEquals",
+                                  "argv": [
+                                    "aws-us-gov",
+                                    {
+                                      "fn": "getAttr",
+                                      "argv": [
+                                        {
+                                          "ref": "PartitionResult"
+                                        },
+                                        "name"
+                                      ]
+                                    }
+                                  ]
+                                }
+                              ],
+                              "endpoint": {
+                                "url": "https://portal.sso.{Region}.amazonaws.com",
+                                "properties": {},
+                                "headers": {}
+                              },
+                              "type": "endpoint"
+                            },
                             {
                               "conditions": [],
                               "endpoint": {
@@ -1233,7 +1258,7 @@
               "documentation": "For region us-gov-east-1 with FIPS enabled and DualStack disabled",
               "expect": {
                 "endpoint": {
-                  "url": "https://portal.sso-fips.us-gov-east-1.amazonaws.com"
+                  "url": "https://portal.sso.us-gov-east-1.amazonaws.com"
                 }
               },
               "params": {
@@ -1452,4 +1477,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}