diff --git a/clients/client-neptune/src/commands/CreateDBInstanceCommand.ts b/clients/client-neptune/src/commands/CreateDBInstanceCommand.ts
index 3ad834dd8585..c5e2c985b200 100644
--- a/clients/client-neptune/src/commands/CreateDBInstanceCommand.ts
+++ b/clients/client-neptune/src/commands/CreateDBInstanceCommand.ts
@@ -14,7 +14,11 @@ import {
   SMITHY_CONTEXT_KEY,
 } from "@smithy/types";
 
-import { CreateDBInstanceMessage, CreateDBInstanceResult } from "../models/models_0";
+import {
+  CreateDBInstanceMessage,
+  CreateDBInstanceMessageFilterSensitiveLog,
+  CreateDBInstanceResult,
+} from "../models/models_0";
 import { NeptuneClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../NeptuneClient";
 import { de_CreateDBInstanceCommand, se_CreateDBInstanceCommand } from "../protocols/Aws_query";
 
@@ -368,7 +372,7 @@ export class CreateDBInstanceCommand extends $Command<
       logger,
       clientName,
       commandName,
-      inputFilterSensitiveLog: (_: any) => _,
+      inputFilterSensitiveLog: CreateDBInstanceMessageFilterSensitiveLog,
       outputFilterSensitiveLog: (_: any) => _,
       [SMITHY_CONTEXT_KEY]: {
         service: "AmazonRDSv19",
diff --git a/clients/client-neptune/src/commands/ModifyDBInstanceCommand.ts b/clients/client-neptune/src/commands/ModifyDBInstanceCommand.ts
index cd73648c5ee2..9e0e5f15bf68 100644
--- a/clients/client-neptune/src/commands/ModifyDBInstanceCommand.ts
+++ b/clients/client-neptune/src/commands/ModifyDBInstanceCommand.ts
@@ -14,7 +14,11 @@ import {
   SMITHY_CONTEXT_KEY,
 } from "@smithy/types";
 
-import { ModifyDBInstanceMessage, ModifyDBInstanceResult } from "../models/models_0";
+import {
+  ModifyDBInstanceMessage,
+  ModifyDBInstanceMessageFilterSensitiveLog,
+  ModifyDBInstanceResult,
+} from "../models/models_0";
 import { NeptuneClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../NeptuneClient";
 import { de_ModifyDBInstanceCommand, se_ModifyDBInstanceCommand } from "../protocols/Aws_query";
 
@@ -355,7 +359,7 @@ export class ModifyDBInstanceCommand extends $Command<
       logger,
       clientName,
       commandName,
-      inputFilterSensitiveLog: (_: any) => _,
+      inputFilterSensitiveLog: ModifyDBInstanceMessageFilterSensitiveLog,
       outputFilterSensitiveLog: (_: any) => _,
       [SMITHY_CONTEXT_KEY]: {
         service: "AmazonRDSv19",
diff --git a/clients/client-neptune/src/models/models_0.ts b/clients/client-neptune/src/models/models_0.ts
index 3f6f803da020..5cdce2f1fe5e 100644
--- a/clients/client-neptune/src/models/models_0.ts
+++ b/clients/client-neptune/src/models/models_0.ts
@@ -1,5 +1,5 @@
 // smithy-typescript generated code
-import { ExceptionOptionType as __ExceptionOptionType } from "@smithy/smithy-client";
+import { ExceptionOptionType as __ExceptionOptionType, SENSITIVE_STRING } from "@smithy/smithy-client";
 
 import { NeptuneServiceException as __BaseException } from "./NeptuneServiceException";
 
@@ -23,7 +23,7 @@ export interface AddRoleToDBClusterMessage {
   /**
    * @public
    * <p>The name of the feature for the Neptune DB cluster that the IAM role is to be associated with.
-   *       For the list of supported feature names, see <a href="neptune/latest/userguide/api-other-apis.html#DBEngineVersion">DBEngineVersion</a>.</p>
+   *       For the list of supported feature names, see <a>DBEngineVersion</a>.</p>
    */
   FeatureName?: string;
 }
@@ -1280,7 +1280,7 @@ export interface CreateDBClusterMessage {
    * <p>The daily time range during which automated backups are created if automated backups are
    *       enabled using the <code>BackupRetentionPeriod</code> parameter.</p>
    *          <p>The default is a 30-minute window selected at random from an 8-hour block of time for each
-   *       Amazon Region. To see the time blocks available, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/AdjustingTheMaintenanceWindow.html"> Adjusting the Preferred
+   *       Amazon Region. To see the time blocks available, see <a href="https://docs.aws.amazon.com/neptune/latest/userguide/manage-console-maintaining.html#manage-console-maintaining-window">Neptune
    *       Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>
    *          </p>
    *          <p>Constraints:</p>
@@ -1308,8 +1308,7 @@ export interface CreateDBClusterMessage {
    *          <p>Format: <code>ddd:hh24:mi-ddd:hh24:mi</code>
    *          </p>
    *          <p>The default is a 30-minute window selected at random from an 8-hour block of time for each
-   *       Amazon Region, occurring on a random day of the week. To see the time blocks available, see
-   *       <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/AdjustingTheMaintenanceWindow.html"> Adjusting the Preferred
+   *       Amazon Region, occurring on a random day of the week. To see the time blocks available, see <a href="https://docs.aws.amazon.com/neptune/latest/userguide/manage-console-maintaining.html#manage-console-maintaining-window">Neptune
    *       Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>
    *          </p>
    *          <p>Valid Days: Mon, Tue, Wed, Thu, Fri, Sat, Sun.</p>
@@ -1450,7 +1449,7 @@ export interface DBClusterRole {
   /**
    * @public
    * <p>The name of the feature associated with the Amazon Identity and Access Management (IAM) role.
-   *       For the list of supported feature names, see <a href="https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions">DescribeDBEngineVersions</a>.
+   *       For the list of supported feature names, see <a>DescribeDBEngineVersions</a>.
    *     </p>
    */
   FeatureName?: string;
@@ -1624,7 +1623,7 @@ export interface VpcSecurityGroupMembership {
 /**
  * @public
  * <p>Contains the details of an Amazon Neptune DB cluster.</p>
- *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+ *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
  */
 export interface DBCluster {
   /**
@@ -1926,7 +1925,7 @@ export interface CreateDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -4435,7 +4434,7 @@ export interface DeleteDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -6990,7 +6989,7 @@ export interface FailoverDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -7271,7 +7270,7 @@ export interface ModifyDBClusterMessage {
    *       parameter results in an outage. The change is applied during the next maintenance window
    *       unless the <code>ApplyImmediately</code> parameter is set to true.</p>
    *          <p>For a list of valid engine versions, see <a href="https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html">Engine Releases for Amazon
-   *       Neptune</a>, or call <a href="https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions">DescribeDBEngineVersions</a>.</p>
+   *       Neptune</a>, or call <a>DescribeDBEngineVersions</a>.</p>
    */
   EngineVersion?: string;
 
@@ -7340,7 +7339,7 @@ export interface ModifyDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -8275,7 +8274,7 @@ export interface PromoteReadReplicaDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -8394,7 +8393,7 @@ export interface RemoveRoleFromDBClusterMessage {
   /**
    * @public
    * <p>The name of the feature for the DB cluster that the IAM role is to be disassociated from.
-   *       For the list of supported feature names, see <a href="https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions">DescribeDBEngineVersions</a>.</p>
+   *       For the list of supported feature names, see <a>DescribeDBEngineVersions</a>.</p>
    */
   FeatureName?: string;
 }
@@ -8762,7 +8761,7 @@ export interface RestoreDBClusterFromSnapshotResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -8977,7 +8976,7 @@ export interface RestoreDBClusterToPointInTimeResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -9001,7 +9000,7 @@ export interface StartDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
@@ -9025,7 +9024,23 @@ export interface StopDBClusterResult {
   /**
    * @public
    * <p>Contains the details of an Amazon Neptune DB cluster.</p>
-   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>
+   *          <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>
    */
   DBCluster?: DBCluster;
 }
+
+/**
+ * @internal
+ */
+export const CreateDBInstanceMessageFilterSensitiveLog = (obj: CreateDBInstanceMessage): any => ({
+  ...obj,
+  ...(obj.TdeCredentialPassword && { TdeCredentialPassword: SENSITIVE_STRING }),
+});
+
+/**
+ * @internal
+ */
+export const ModifyDBInstanceMessageFilterSensitiveLog = (obj: ModifyDBInstanceMessage): any => ({
+  ...obj,
+  ...(obj.TdeCredentialPassword && { TdeCredentialPassword: SENSITIVE_STRING }),
+});
diff --git a/codegen/sdk-codegen/aws-models/neptune.json b/codegen/sdk-codegen/aws-models/neptune.json
index 6ca16619f3ae..a6a831d94ee3 100644
--- a/codegen/sdk-codegen/aws-models/neptune.json
+++ b/codegen/sdk-codegen/aws-models/neptune.json
@@ -77,7 +77,7 @@
         "FeatureName": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The name of the feature for the Neptune DB cluster that the IAM role is to be associated with.\n      For the list of supported feature names, see <a href=\"neptune/latest/userguide/api-other-apis.html#DBEngineVersion\">DBEngineVersion</a>.</p>"
+            "smithy.api#documentation": "<p>The name of the feature for the Neptune DB cluster that the IAM role is to be associated with.\n      For the list of supported feature names, see <a>DBEngineVersion</a>.</p>"
           }
         }
       },
@@ -2253,13 +2253,13 @@
         "PreferredBackupWindow": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The daily time range during which automated backups are created if automated backups are\n      enabled using the <code>BackupRetentionPeriod</code> parameter.</p>\n         <p>The default is a 30-minute window selected at random from an 8-hour block of time for each\n      Amazon Region. To see the time blocks available, see <a href=\"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/AdjustingTheMaintenanceWindow.html\"> Adjusting the Preferred\n      Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>\n         </p>\n         <p>Constraints:</p>\n         <ul>\n            <li>\n               <p>Must be in the format <code>hh24:mi-hh24:mi</code>.</p>\n            </li>\n            <li>\n               <p>Must be in Universal Coordinated Time (UTC).</p>\n            </li>\n            <li>\n               <p>Must not conflict with the preferred maintenance window.</p>\n            </li>\n            <li>\n               <p>Must be at least 30 minutes.</p>\n            </li>\n         </ul>"
+            "smithy.api#documentation": "<p>The daily time range during which automated backups are created if automated backups are\n      enabled using the <code>BackupRetentionPeriod</code> parameter.</p>\n         <p>The default is a 30-minute window selected at random from an 8-hour block of time for each\n      Amazon Region. To see the time blocks available, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/manage-console-maintaining.html#manage-console-maintaining-window\">Neptune\n      Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>\n         </p>\n         <p>Constraints:</p>\n         <ul>\n            <li>\n               <p>Must be in the format <code>hh24:mi-hh24:mi</code>.</p>\n            </li>\n            <li>\n               <p>Must be in Universal Coordinated Time (UTC).</p>\n            </li>\n            <li>\n               <p>Must not conflict with the preferred maintenance window.</p>\n            </li>\n            <li>\n               <p>Must be at least 30 minutes.</p>\n            </li>\n         </ul>"
           }
         },
         "PreferredMaintenanceWindow": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The weekly time range during which system maintenance can occur, in Universal Coordinated\n      Time (UTC).</p>\n         <p>Format: <code>ddd:hh24:mi-ddd:hh24:mi</code>\n         </p>\n         <p>The default is a 30-minute window selected at random from an 8-hour block of time for each\n      Amazon Region, occurring on a random day of the week. To see the time blocks available, see\n      <a href=\"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/AdjustingTheMaintenanceWindow.html\"> Adjusting the Preferred\n      Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>\n         </p>\n         <p>Valid Days: Mon, Tue, Wed, Thu, Fri, Sat, Sun.</p>\n         <p>Constraints: Minimum 30-minute window.</p>"
+            "smithy.api#documentation": "<p>The weekly time range during which system maintenance can occur, in Universal Coordinated\n      Time (UTC).</p>\n         <p>Format: <code>ddd:hh24:mi-ddd:hh24:mi</code>\n         </p>\n         <p>The default is a 30-minute window selected at random from an 8-hour block of time for each\n      Amazon Region, occurring on a random day of the week. To see the time blocks available, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/manage-console-maintaining.html#manage-console-maintaining-window\">Neptune\n      Maintenance Window</a> in the <i>Amazon Neptune User Guide.</i>\n         </p>\n         <p>Valid Days: Mon, Tue, Wed, Thu, Fri, Sat, Sun.</p>\n         <p>Constraints: Minimum 30-minute window.</p>"
           }
         },
         "ReplicationSourceIdentifier": {
@@ -2311,7 +2311,10 @@
           }
         },
         "ServerlessV2ScalingConfiguration": {
-          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration"
+          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration",
+          "traits": {
+            "smithy.api#documentation": "<p>Contains the scaling configuration of a Neptune Serverless DB cluster.</p>\n         <p>For more information, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/neptune-serverless-using.html\">Using Amazon Neptune Serverless</a> in the\n      <i>Amazon Neptune User Guide</i>.</p>"
+          }
         },
         "GlobalClusterIdentifier": {
           "target": "com.amazonaws.neptune#GlobalClusterIdentifier",
@@ -2723,7 +2726,7 @@
           }
         },
         "TdeCredentialPassword": {
-          "target": "com.amazonaws.neptune#String",
+          "target": "com.amazonaws.neptune#SensitiveString",
           "traits": {
             "smithy.api#documentation": "<p>The password for the given ARN from the key store in order to access the device.</p>"
           }
@@ -3408,7 +3411,10 @@
           }
         },
         "ServerlessV2ScalingConfiguration": {
-          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfigurationInfo"
+          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfigurationInfo",
+          "traits": {
+            "smithy.api#documentation": "<p>Shows the scaling configuration for a Neptune Serverless DB cluster.</p>\n         <p>For more information, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/neptune-serverless-using.html\">Using Amazon Neptune Serverless</a> in the\n      <i>Amazon Neptune User Guide</i>.</p>"
+          }
         },
         "GlobalClusterIdentifier": {
           "target": "com.amazonaws.neptune#GlobalClusterIdentifier",
@@ -3418,7 +3424,7 @@
         }
       },
       "traits": {
-        "smithy.api#documentation": "<p>Contains the details of an Amazon Neptune DB cluster.</p>\n         <p>This data type is used as a response element in the <a>DescribeDBClusters</a> action.</p>"
+        "smithy.api#documentation": "<p>Contains the details of an Amazon Neptune DB cluster.</p>\n         <p>This data type is used as a response element in the <a>DescribeDBClusters</a>.</p>"
       }
     },
     "com.amazonaws.neptune#DBClusterAlreadyExistsFault": {
@@ -3864,7 +3870,7 @@
         "FeatureName": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The name of the feature associated with the Amazon Identity and Access Management (IAM) role.\n      For the list of supported feature names, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions\">DescribeDBEngineVersions</a>.\n    </p>"
+            "smithy.api#documentation": "<p>The name of the feature associated with the Amazon Identity and Access Management (IAM) role.\n      For the list of supported feature names, see <a>DescribeDBEngineVersions</a>.\n    </p>"
           }
         }
       },
@@ -8466,7 +8472,7 @@
         "EngineVersion": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The version number of the database engine to which you want to upgrade. Changing this\n      parameter results in an outage. The change is applied during the next maintenance window\n      unless the <code>ApplyImmediately</code> parameter is set to true.</p>\n         <p>For a list of valid engine versions, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html\">Engine Releases for Amazon\n      Neptune</a>, or call <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions\">DescribeDBEngineVersions</a>.</p>"
+            "smithy.api#documentation": "<p>The version number of the database engine to which you want to upgrade. Changing this\n      parameter results in an outage. The change is applied during the next maintenance window\n      unless the <code>ApplyImmediately</code> parameter is set to true.</p>\n         <p>For a list of valid engine versions, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases.html\">Engine Releases for Amazon\n      Neptune</a>, or call <a>DescribeDBEngineVersions</a>.</p>"
           }
         },
         "AllowMajorVersionUpgrade": {
@@ -8494,7 +8500,10 @@
           }
         },
         "ServerlessV2ScalingConfiguration": {
-          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration"
+          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration",
+          "traits": {
+            "smithy.api#documentation": "<p>Contains the scaling configuration of a Neptune Serverless DB cluster.</p>\n         <p>For more information, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/neptune-serverless-using.html\">Using Amazon Neptune Serverless</a> in the\n      <i>Amazon Neptune User Guide</i>.</p>"
+          }
         }
       },
       "traits": {
@@ -8826,7 +8835,7 @@
           }
         },
         "TdeCredentialPassword": {
-          "target": "com.amazonaws.neptune#String",
+          "target": "com.amazonaws.neptune#SensitiveString",
           "traits": {
             "smithy.api#documentation": "<p>The password for the given ARN from the key store in order to access the device.</p>"
           }
@@ -9974,7 +9983,7 @@
         "FeatureName": {
           "target": "com.amazonaws.neptune#String",
           "traits": {
-            "smithy.api#documentation": "<p>The name of the feature for the DB cluster that the IAM role is to be disassociated from.\n      For the list of supported feature names, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/api-other-apis.html#DescribeDBEngineVersions\">DescribeDBEngineVersions</a>.</p>"
+            "smithy.api#documentation": "<p>The name of the feature for the DB cluster that the IAM role is to be disassociated from.\n      For the list of supported feature names, see <a>DescribeDBEngineVersions</a>.</p>"
           }
         }
       },
@@ -10394,7 +10403,10 @@
           }
         },
         "ServerlessV2ScalingConfiguration": {
-          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration"
+          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration",
+          "traits": {
+            "smithy.api#documentation": "<p>Contains the scaling configuration of a Neptune Serverless DB cluster.</p>\n         <p>For more information, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/neptune-serverless-using.html\">Using Amazon Neptune Serverless</a> in the\n      <i>Amazon Neptune User Guide</i>.</p>"
+          }
         }
       },
       "traits": {
@@ -10575,7 +10587,10 @@
           }
         },
         "ServerlessV2ScalingConfiguration": {
-          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration"
+          "target": "com.amazonaws.neptune#ServerlessV2ScalingConfiguration",
+          "traits": {
+            "smithy.api#documentation": "<p>Contains the scaling configuration of a Neptune Serverless DB cluster.</p>\n         <p>For more information, see <a href=\"https://docs.aws.amazon.com/neptune/latest/userguide/neptune-serverless-using.html\">Using Amazon Neptune Serverless</a> in the\n      <i>Amazon Neptune User Guide</i>.</p>"
+          }
         }
       },
       "traits": {
@@ -10653,6 +10668,12 @@
         "smithy.api#httpError": 404
       }
     },
+    "com.amazonaws.neptune#SensitiveString": {
+      "type": "string",
+      "traits": {
+        "smithy.api#sensitive": {}
+      }
+    },
     "com.amazonaws.neptune#ServerlessV2ScalingConfiguration": {
       "type": "structure",
       "members": {