diff --git a/clients/client-sesv2/src/commands/SendBulkEmailCommand.ts b/clients/client-sesv2/src/commands/SendBulkEmailCommand.ts
index cbb9409d5747..86e5859cf25a 100644
--- a/clients/client-sesv2/src/commands/SendBulkEmailCommand.ts
+++ b/clients/client-sesv2/src/commands/SendBulkEmailCommand.ts
@@ -85,6 +85,12 @@ export interface SendBulkEmailCommandOutput extends SendBulkEmailResponse, __Met
  *           ReplacementTemplateData: "STRING_VALUE",
  *         },
  *       },
+ *       ReplacementHeaders: [
+ *         {
+ *           Name: "STRING_VALUE", // required
+ *           Value: "STRING_VALUE", // required
+ *         },
+ *       ],
  *     },
  *   ],
  *   ConfigurationSetName: "STRING_VALUE",
diff --git a/clients/client-sesv2/src/models/models_0.ts b/clients/client-sesv2/src/models/models_0.ts
index aac9d8432624..72924f12a851 100644
--- a/clients/client-sesv2/src/models/models_0.ts
+++ b/clients/client-sesv2/src/models/models_0.ts
@@ -880,6 +880,40 @@ export interface BulkEmailEntry {
    * @public
    */
   ReplacementEmailContent?: ReplacementEmailContent;
+
+  /**
+   * <p>The list of message headers associated with the <code>BulkEmailEntry</code> data type.</p>
+   *          <ul>
+   *             <li>
+   *                <p>Headers Not Present in <code>BulkEmailEntry</code>: If a header is specified in
+   *                     <a href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html">
+   *                      <code>Template</code>
+   *                   </a> but not in <code>BulkEmailEntry</code>, the header
+   *                     from <code>Template</code> will be added to the outgoing email.</p>
+   *             </li>
+   *             <li>
+   *                <p>Headers Present in <code>BulkEmailEntry</code>: If a header is specified in
+   *                     <code>BulkEmailEntry</code>, it takes precedence over any header of the same name specified
+   *                     in <a href="https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html">
+   *                      <code>Template</code>
+   *                   </a>:</p>
+   *                <ul>
+   *                   <li>
+   *                      <p>If the header is also defined within <code>Template</code>,
+   *                             the value from <code>BulkEmailEntry</code> will replace the header's
+   *                             value in the email.</p>
+   *                   </li>
+   *                   <li>
+   *                      <p>If the header is not defined within <code>Template</code>,
+   *                             it will simply be added to the email as specified in
+   *                             <code>BulkEmailEntry</code>.</p>
+   *                   </li>
+   *                </ul>
+   *             </li>
+   *          </ul>
+   * @public
+   */
+  ReplacementHeaders?: MessageHeader[];
 }
 
 /**
diff --git a/codegen/sdk-codegen/aws-models/sesv2.json b/codegen/sdk-codegen/aws-models/sesv2.json
index 499fa7dff9c7..c6175b2a0bab 100644
--- a/codegen/sdk-codegen/aws-models/sesv2.json
+++ b/codegen/sdk-codegen/aws-models/sesv2.json
@@ -460,6 +460,12 @@
           "traits": {
             "smithy.api#documentation": "<p>The <code>ReplacementEmailContent</code> associated with a\n            <code>BulkEmailEntry</code>.</p>"
           }
+        },
+        "ReplacementHeaders": {
+          "target": "com.amazonaws.sesv2#MessageHeaderList",
+          "traits": {
+            "smithy.api#documentation": "<p>The list of message headers associated with the <code>BulkEmailEntry</code> data type.</p>\n         <ul>\n            <li>\n               <p>Headers Not Present in <code>BulkEmailEntry</code>: If a header is specified in\n                    <a href=\"https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html\">\n                     <code>Template</code>\n                  </a> but not in <code>BulkEmailEntry</code>, the header\n                    from <code>Template</code> will be added to the outgoing email.</p>\n            </li>\n            <li>\n               <p>Headers Present in <code>BulkEmailEntry</code>: If a header is specified in\n                    <code>BulkEmailEntry</code>, it takes precedence over any header of the same name specified\n                    in <a href=\"https://docs.aws.amazon.com/ses/latest/APIReference-V2/API_Template.html\">\n                     <code>Template</code>\n                  </a>:</p>\n               <ul>\n                  <li>\n                     <p>If the header is also defined within <code>Template</code>,\n                            the value from <code>BulkEmailEntry</code> will replace the header's\n                            value in the email.</p>\n                  </li>\n                  <li>\n                     <p>If the header is not defined within <code>Template</code>,\n                            it will simply be added to the email as specified in\n                            <code>BulkEmailEntry</code>.</p>\n                  </li>\n               </ul>\n            </li>\n         </ul>"
+          }
         }
       }
     },