diff --git a/src/idz/decoder/index.ts b/src/idz/decoder/index.ts
index 76d755b..f20dfc9 100644
--- a/src/idz/decoder/index.ts
+++ b/src/idz/decoder/index.ts
@@ -41,6 +41,7 @@ import { updateResult } from "./updateResult";
 import { updateTeamPoints } from "./updateTeamPoints";
 import { updateUiReport } from "./updateUiReport";
 import { updateUserLog } from "./updateUserLog";
+import { lockProfileExtend } from "./lockProfileExtend";
 
 export type ReaderFn = ((buf: Buffer) => Request) & {
   msgCode: RequestCode;
@@ -74,6 +75,7 @@ const funcList: ReaderFn[] = [
   loadTopTen,
   lockGarage,
   lockProfile,
+  lockProfileExtend,
   msg00AD,
   saveExpedition1,
   saveExpedition2,
diff --git a/src/idz/decoder/lockProfileExtend.ts b/src/idz/decoder/lockProfileExtend.ts
new file mode 100644
index 0000000..e7d6f02
--- /dev/null
+++ b/src/idz/decoder/lockProfileExtend.ts
@@ -0,0 +1,15 @@
+import { RequestCode } from "./_defs";
+import { ExtId } from "../model/base";
+import { Profile } from "../model/profile";
+import { LockProfileExtendRequest } from "../request/lockProfileExtend";
+
+lockProfileExtend.msgCode = 0x006d as RequestCode;
+lockProfileExtend.msgLen = 0x0020;
+
+export function lockProfileExtend(buf: Buffer): LockProfileExtendRequest {
+  return {
+    type: "lock_profile_extend_req",
+    profileId: buf.readUInt32LE(0x0004) as ExtId<Profile>,
+    luid: buf.slice(0x0008, buf.indexOf("\0")).toString("ascii"),
+  };
+}
diff --git a/src/idz/encoder/index.ts b/src/idz/encoder/index.ts
index 4f8afca..ebdcc99 100644
--- a/src/idz/encoder/index.ts
+++ b/src/idz/encoder/index.ts
@@ -6,6 +6,7 @@ import { createTeam } from "./createTeam";
 import { discoverProfile } from "./discoverProfile";
 import { generic } from "./generic";
 import { lockProfile } from "./lockProfile";
+import { lockProfileExtend } from "./lockProfileExtend";
 import { load2on2 } from "./load2on2";
 import { loadConfig } from "./loadConfig";
 import { loadConfig2 } from "./loadConfig2";
@@ -92,6 +93,9 @@ function encode(res: Response): Buffer {
     case "load_top_ten_res":
       return loadTopTen(res);
 
+    case "lock_profile_extend_res":
+      return lockProfileExtend(res);
+
     case "lock_profile_res":
       return lockProfile(res);
 
diff --git a/src/idz/encoder/lockProfileExtend.ts b/src/idz/encoder/lockProfileExtend.ts
new file mode 100644
index 0000000..da1c797
--- /dev/null
+++ b/src/idz/encoder/lockProfileExtend.ts
@@ -0,0 +1,10 @@
+import { LockProfileExtendResponse } from "../response/lockProfileExtend";
+
+export function lockProfileExtend(res: LockProfileExtendResponse): Buffer {
+  const buf = Buffer.alloc(0x0010);
+
+  buf.writeUInt16LE(0x006e, 0x0000);
+  buf.writeUInt8(res.status, 0x0004);
+
+  return buf;
+}
diff --git a/src/idz/handler/index.ts b/src/idz/handler/index.ts
index 6be85e8..2ad4991 100644
--- a/src/idz/handler/index.ts
+++ b/src/idz/handler/index.ts
@@ -19,6 +19,7 @@ import { loadTeamRanking } from "./loadTeamRanking";
 import { loadTopTen } from "./loadTopTen";
 import { lockGarage } from "./lockGarage";
 import { lockProfile } from "./lockProfile";
+import { lockProfileExtend } from "./lockProfileExtend";
 import { msg00AD } from "./msg00AD";
 import { saveExpedition } from "./saveExpedition";
 import { saveGarage } from "./saveGarage";
@@ -104,6 +105,9 @@ export async function dispatch(
     case "lock_garage_request":
       return lockGarage(w, req);
 
+    case "lock_profile_extend_req":
+      return lockProfileExtend(w, req);
+
     case "lock_profile_req":
       return lockProfile(w, req);
 
diff --git a/src/idz/handler/lockProfileExtend.ts b/src/idz/handler/lockProfileExtend.ts
new file mode 100644
index 0000000..ea6f1fe
--- /dev/null
+++ b/src/idz/handler/lockProfileExtend.ts
@@ -0,0 +1,13 @@
+import { Repositories } from "../repo";
+import { LockProfileExtendRequest } from "../request/lockProfileExtend";
+import { LockProfileExtendResponse } from "../response/lockProfileExtend";
+
+export function lockProfileExtend(
+  w: Repositories,
+  req: LockProfileExtendRequest
+): LockProfileExtendResponse {
+  return {
+    type: "lock_profile_extend_res",
+    status: 1,
+  };
+}
diff --git a/src/idz/request/index.ts b/src/idz/request/index.ts
index 1b22af4..d9e7aaf 100644
--- a/src/idz/request/index.ts
+++ b/src/idz/request/index.ts
@@ -19,6 +19,7 @@ import { LoadTeamRequest } from "./loadTeam";
 import { LoadTeamRankingRequest } from "./loadTeamRanking";
 import { LoadTopTenRequest } from "./loadTopTen";
 import { LockProfileRequest } from "./lockProfile";
+import { LockProfileExtendRequest } from "./lockProfileExtend";
 import { LockGarageRequest } from "./lockGarage";
 import { Message00AD } from "./msg00AD";
 import { SaveExpeditionRequest } from "./saveExpedition";
@@ -59,6 +60,7 @@ export type Request =
   | LoadTeamRankingRequest
   | LoadTopTenRequest
   | LockProfileRequest
+  | LockProfileExtendRequest
   | LockGarageRequest
   | Message00AD
   | SaveExpeditionRequest
diff --git a/src/idz/request/lockProfileExtend.ts b/src/idz/request/lockProfileExtend.ts
new file mode 100644
index 0000000..1e17029
--- /dev/null
+++ b/src/idz/request/lockProfileExtend.ts
@@ -0,0 +1,8 @@
+import { ExtId } from "../model/base";
+import { Profile } from "../model/profile";
+
+export interface LockProfileExtendRequest {
+  type: "lock_profile_extend_req";
+  profileId: ExtId<Profile>;
+  luid: string;
+}
diff --git a/src/idz/response/index.ts b/src/idz/response/index.ts
index d994bbb..dd19dec 100644
--- a/src/idz/response/index.ts
+++ b/src/idz/response/index.ts
@@ -18,6 +18,7 @@ import { LoadStockerResponse } from "./loadStocker";
 import { LoadTeamResponse } from "./loadTeam";
 import { LoadTeamRankingResponse } from "./loadTeamRanking";
 import { LoadTopTenResponse } from "./loadTopTen";
+import { LockProfileExtendResponse } from "./lockProfileExtend";
 import { LockProfileResponse } from "./lockProfile";
 import { SaveExpeditionResponse } from "./saveExpedition";
 import { SaveGarageResponse } from "./saveGarage";
@@ -48,6 +49,7 @@ export type Response =
   | LoadStockerResponse
   | LoadTeamResponse
   | LoadTeamRankingResponse
+  | LockProfileExtendResponse
   | LockProfileResponse
   | LoadTopTenResponse
   | UnlockProfileResponse
diff --git a/src/idz/response/lockProfileExtend.ts b/src/idz/response/lockProfileExtend.ts
new file mode 100644
index 0000000..58cfc37
--- /dev/null
+++ b/src/idz/response/lockProfileExtend.ts
@@ -0,0 +1,4 @@
+export interface LockProfileExtendResponse {
+  type: "lock_profile_extend_res";
+  status: number;
+}