diff --git a/src/http.ts b/src/http.ts
index 26e5b28..cf07fed 100644
--- a/src/http.ts
+++ b/src/http.ts
@@ -45,12 +45,14 @@ import { EditSite } from "./types/EditSite";
 import { FeaturePost } from "./types/FeaturePost";
 import { FollowCommunity } from "./types/FollowCommunity";
 import { GetBannedPersons } from "./types/GetBannedPersons";
+import { GetCaptcha } from "./types/GetCaptcha";
 import { GetCaptchaResponse } from "./types/GetCaptchaResponse";
 import { GetComment } from "./types/GetComment";
 import { GetComments } from "./types/GetComments";
 import { GetCommentsResponse } from "./types/GetCommentsResponse";
 import { GetCommunity } from "./types/GetCommunity";
 import { GetCommunityResponse } from "./types/GetCommunityResponse";
+import { GetFederatedInstances } from "./types/GetFederatedInstances";
 import { GetModlog } from "./types/GetModlog";
 import { GetModlogResponse } from "./types/GetModlogResponse";
 import { GetPersonDetails } from "./types/GetPersonDetails";
@@ -936,11 +938,11 @@ export class LemmyHttp {
    *
    * `HTTP.GET /user/get_captcha`
    */
-  getCaptcha() {
-    return this.wrapper<any, GetCaptchaResponse>(
+  getCaptcha(form: GetCaptcha) {
+    return this.wrapper<GetCaptcha, GetCaptchaResponse>(
       HttpType.Get,
       "/user/get_captcha",
-      {}
+      form
     );
   }
 
@@ -1191,6 +1193,15 @@ export class LemmyHttp {
     return this.wrapper(HttpType.Post, "/custom_emoji/delete", form);
   }
 
+  /**
+   * Fetch federated instances.
+   *
+   * `HTTP.Get /federated_instances`
+   */
+  async getFederatedInstances(form: GetFederatedInstances) {
+    return this.wrapper(HttpType.Get, "/federated_instances", form);
+  }
+
   /**
    * Upload an image to the server.
    */
diff --git a/src/types/GetCaptcha.ts b/src/types/GetCaptcha.ts
index 6f134e7..faaf6cb 100644
--- a/src/types/GetCaptcha.ts
+++ b/src/types/GetCaptcha.ts
@@ -1,3 +1,5 @@
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
 
-export type GetCaptcha = null;
+export interface GetCaptcha {
+  auth?: string;
+}
diff --git a/src/types/GetFederatedInstances.ts b/src/types/GetFederatedInstances.ts
index 5d7b03d..bf3b6c7 100644
--- a/src/types/GetFederatedInstances.ts
+++ b/src/types/GetFederatedInstances.ts
@@ -1,3 +1,5 @@
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
 
-export type GetFederatedInstances = null;
+export interface GetFederatedInstances {
+  auth?: string;
+}
diff --git a/src/types/others.ts b/src/types/others.ts
index abcca6b..0909c33 100644
--- a/src/types/others.ts
+++ b/src/types/others.ts
@@ -90,6 +90,7 @@ export enum UserOperation {
   CreateCustomEmoji,
   EditCustomEmoji,
   DeleteCustomEmoji,
+  GetFederatedInstances,
 }
 
 export interface UploadImage {
diff --git a/src/websocket.ts b/src/websocket.ts
index f5a14e4..a33add4 100644
--- a/src/websocket.ts
+++ b/src/websocket.ts
@@ -33,9 +33,11 @@ import { EditSite } from "./types/EditSite";
 import { FeaturePost } from "./types/FeaturePost";
 import { FollowCommunity } from "./types/FollowCommunity";
 import { GetBannedPersons } from "./types/GetBannedPersons";
+import { GetCaptcha } from "./types/GetCaptcha";
 import { GetComment } from "./types/GetComment";
 import { GetComments } from "./types/GetComments";
 import { GetCommunity } from "./types/GetCommunity";
+import { GetFederatedInstances } from "./types/GetFederatedInstances";
 import { GetModlog } from "./types/GetModlog";
 import { GetPersonDetails } from "./types/GetPersonDetails";
 import { GetPersonMentions } from "./types/GetPersonMentions";
@@ -141,8 +143,8 @@ export class LemmyWebsocket {
   /**
    * Fetch a Captcha.
    */
-  getCaptcha() {
-    return wrapper(UserOperation.GetCaptcha, {});
+  getCaptcha(form: GetCaptcha) {
+    return wrapper(UserOperation.GetCaptcha, form);
   }
 
   /**
@@ -706,6 +708,13 @@ export class LemmyWebsocket {
   deleteCustomEmoji(form: DeleteCustomEmoji) {
     return wrapper(UserOperation.DeleteCustomEmoji, form);
   }
+
+  /**
+   * Fetch federated instances.
+   */
+  getFederatedInstances(form: GetFederatedInstances) {
+    return wrapper(UserOperation.GetFederatedInstances, form);
+  }
 }
 
 function wrapper<MessageType>(op: UserOperation, data: MessageType) {