diff --git a/.fern/metadata.json b/.fern/metadata.json
index 10a6aa0ee..659327584 100644
--- a/.fern/metadata.json
+++ b/.fern/metadata.json
@@ -20,5 +20,5 @@
         "testFramework": "jest",
         "enableForwardCompatibleEnums": true
     },
-    "sdkVersion": "4.0.0"
+    "sdkVersion": "4.0.1"
 }
diff --git a/src/BaseClient.ts b/src/BaseClient.ts
index 0f5187f8a..e63f7ba18 100644
--- a/src/BaseClient.ts
+++ b/src/BaseClient.ts
@@ -56,8 +56,8 @@ export function normalizeClientOptions<T extends BaseClientOptions = BaseClientO
         {
             "X-Fern-Language": "JavaScript",
             "X-Fern-SDK-Name": "@mergeapi/merge-node-client",
-            "X-Fern-SDK-Version": "4.0.0",
-            "User-Agent": "@mergeapi/merge-node-client/4.0.0",
+            "X-Fern-SDK-Version": "4.0.1",
+            "User-Agent": "@mergeapi/merge-node-client/4.0.1",
             "X-Fern-Runtime": core.RUNTIME.type,
             "X-Fern-Runtime-Version": core.RUNTIME.version,
             "X-Account-Token": options?.accountToken,
diff --git a/src/api/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts b/src/api/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
index 20a7d9e84..19e64d9b3 100644
--- a/src/api/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
+++ b/src/api/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
@@ -43,4 +43,6 @@ export interface EndUserDetailsRequest {
     areSyncsDisabled?: boolean;
     /** A JSON object containing integration-specific configuration options. */
     integrationSpecificConfig?: Record<string, unknown>;
+    /** The UUID of the linked destination that you want this Linked Account to be tied to. */
+    linkedDestinationId?: string;
 }
diff --git a/src/serialization/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts b/src/serialization/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
index a832150d3..e9e890a61 100644
--- a/src/serialization/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
+++ b/src/serialization/resources/hris/resources/linkToken/client/requests/EndUserDetailsRequest.ts
@@ -42,6 +42,7 @@ export const EndUserDetailsRequest: core.serialization.Schema<
         "integration_specific_config",
         core.serialization.record(core.serialization.string(), core.serialization.unknown()).optional(),
     ),
+    linkedDestinationId: core.serialization.property("linked_destination_id", core.serialization.string().optional()),
 });
 
 export declare namespace EndUserDetailsRequest {
@@ -62,5 +63,6 @@ export declare namespace EndUserDetailsRequest {
         language?: EndUserDetailsRequestLanguage.Raw | null;
         are_syncs_disabled?: boolean | null;
         integration_specific_config?: Record<string, unknown> | null;
+        linked_destination_id?: string | null;
     }
 }
diff --git a/src/version.ts b/src/version.ts
index c8a6ab3f5..45528ca2f 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const SDK_VERSION = "4.0.0";
+export const SDK_VERSION = "4.0.1";