diff --git a/src/idz/userdb/decoder/createAutoTeam.ts b/src/idz/userdb/decoder/createAutoTeam.ts
index 578b90b..e1081cc 100644
--- a/src/idz/userdb/decoder/createAutoTeam.ts
+++ b/src/idz/userdb/decoder/createAutoTeam.ts
@@ -8,6 +8,7 @@ export function createAutoTeam(buf: Buffer): CreateAutoTeamRequest {
   return {
     type: "create_auto_team_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     field_0008: buf.readUInt32LE(0x0008),
     field_000C: buf.readUInt8(0x000c),
   };
diff --git a/src/idz/userdb/decoder/createProfile.ts b/src/idz/userdb/decoder/createProfile.ts
index b7479c9..93939d6 100644
--- a/src/idz/userdb/decoder/createProfile.ts
+++ b/src/idz/userdb/decoder/createProfile.ts
@@ -11,6 +11,7 @@ export function createProfile(buf: Buffer): CreateProfileRequest {
   return {
     type: "create_profile_req",
     aimeId: buf.readInt32LE(0x0004) as AimeId,
+    version: 1,
     luid: readAsciiStr(buf, 0x0008, 0x001e),
     name: readSjisStr(buf, 0x001e, 0x0034),
     field_0034: buf.readUInt32LE(0x0034),
diff --git a/src/idz/userdb/decoder/createTeam.ts b/src/idz/userdb/decoder/createTeam.ts
index ef27ef3..cfd6093 100644
--- a/src/idz/userdb/decoder/createTeam.ts
+++ b/src/idz/userdb/decoder/createTeam.ts
@@ -9,6 +9,7 @@ export function createTeam(buf: Buffer): CreateTeamRequest {
   return {
     type: "create_team_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     teamName: readSjisStr(buf, 0x0008, 0x0028),
     field_0028: buf.readUInt16LE(0x0028),
     field_002C: buf.readUInt32LE(0x002c),
diff --git a/src/idz/userdb/decoder/discoverProfile.ts b/src/idz/userdb/decoder/discoverProfile.ts
index ce58a88..2f884d2 100644
--- a/src/idz/userdb/decoder/discoverProfile.ts
+++ b/src/idz/userdb/decoder/discoverProfile.ts
@@ -8,5 +8,6 @@ export function discoverProfile(buf: Buffer): DiscoverProfileRequest {
   return {
     type: "discover_profile_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
   };
 }
diff --git a/src/idz/userdb/decoder/loadGarage.ts b/src/idz/userdb/decoder/loadGarage.ts
index 80862f3..17d809e 100644
--- a/src/idz/userdb/decoder/loadGarage.ts
+++ b/src/idz/userdb/decoder/loadGarage.ts
@@ -8,6 +8,7 @@ export function loadGarage(buf: Buffer): LoadGarageRequest {
   return {
     type: "load_garage_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     fetchOffset: buf.readUInt8(0x0008),
     field_000A: buf.readUInt16LE(0x000a),
   };
diff --git a/src/idz/userdb/decoder/loadProfile.ts b/src/idz/userdb/decoder/loadProfile.ts
index 741db65..6a65ac5 100644
--- a/src/idz/userdb/decoder/loadProfile.ts
+++ b/src/idz/userdb/decoder/loadProfile.ts
@@ -13,6 +13,7 @@ export function loadProfile2(buf: Buffer): LoadProfileRequest2 {
     type: "load_profile_req",
     format: 2,
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     luid: readAsciiStr(buf, 0x0008, 0x0020),
   };
 }
@@ -25,6 +26,7 @@ export function loadProfile3(buf: Buffer): LoadProfileRequest3 {
     type: "load_profile_req",
     format: 3,
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     luid: readAsciiStr(buf, 0x0008, 0x0020),
   };
 }
diff --git a/src/idz/userdb/decoder/loadStocker.ts b/src/idz/userdb/decoder/loadStocker.ts
index c4067fa..0c789d4 100644
--- a/src/idz/userdb/decoder/loadStocker.ts
+++ b/src/idz/userdb/decoder/loadStocker.ts
@@ -8,5 +8,6 @@ export function loadStocker(buf: Buffer): LoadStockerRequest {
   return {
     type: "load_stocker_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
   };
 }
diff --git a/src/idz/userdb/decoder/loadTeam.ts b/src/idz/userdb/decoder/loadTeam.ts
index ba99a49..169eeb9 100644
--- a/src/idz/userdb/decoder/loadTeam.ts
+++ b/src/idz/userdb/decoder/loadTeam.ts
@@ -11,6 +11,7 @@ export function loadTeam(buf: Buffer): LoadTeamRequest {
   return {
     type: "load_team_req",
     aimeId: buf.readUInt32LE(0x0004),
+    version: 1,
     teamExtId: extId !== 0xffffffff ? (extId as ExtId<Team>) : undefined,
   };
 }
diff --git a/src/idz/userdb/decoder/saveNewCar.ts b/src/idz/userdb/decoder/saveNewCar.ts
index 48cd570..8e0ce57 100644
--- a/src/idz/userdb/decoder/saveNewCar.ts
+++ b/src/idz/userdb/decoder/saveNewCar.ts
@@ -10,6 +10,7 @@ export function saveNewCar(buf: Buffer): SaveNewCarRequest {
   return {
     type: "save_new_car_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     luid: readAsciiStr(buf, 0x0008, 0x001e),
     car: car(buf.slice(0x0020, 0x0080)),
     field_0080: buf.readUInt32LE(0x0080),
diff --git a/src/idz/userdb/decoder/saveProfile2.ts b/src/idz/userdb/decoder/saveProfile2.ts
index 3e06d27..6161ad9 100644
--- a/src/idz/userdb/decoder/saveProfile2.ts
+++ b/src/idz/userdb/decoder/saveProfile2.ts
@@ -47,6 +47,7 @@ export function saveProfile2(buf: Buffer): SaveProfileRequest2 {
     type: "save_profile_req",
     format: 2,
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     lv: buf.readUInt16LE(0x0026),
     exp: buf.readUInt32LE(0x0028),
     fame: buf.readUInt32LE(0x0468),
diff --git a/src/idz/userdb/decoder/saveProfile3.ts b/src/idz/userdb/decoder/saveProfile3.ts
index ba85590..08c6b73 100644
--- a/src/idz/userdb/decoder/saveProfile3.ts
+++ b/src/idz/userdb/decoder/saveProfile3.ts
@@ -49,6 +49,7 @@ export function saveProfile3(buf: Buffer): SaveProfileRequest2 {
     type: "save_profile_req",
     format: 2,
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     lv: buf.readUInt16LE(0x0026),
     exp: buf.readUInt32LE(0x0028),
     fame: buf.readUInt32LE(0x04fc),
diff --git a/src/idz/userdb/decoder/saveSettings.ts b/src/idz/userdb/decoder/saveSettings.ts
index ad742be..e13a24d 100644
--- a/src/idz/userdb/decoder/saveSettings.ts
+++ b/src/idz/userdb/decoder/saveSettings.ts
@@ -8,6 +8,7 @@ export function saveSettings(buf: Buffer): SaveSettingsRequest {
   return {
     type: "save_settings_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     dpoint: buf.readUInt32LE(0x0008),
     settings: {
       music: buf.readUInt16LE(0x0002),
diff --git a/src/idz/userdb/decoder/saveStocker.ts b/src/idz/userdb/decoder/saveStocker.ts
index a8a9f5a..2228b85 100644
--- a/src/idz/userdb/decoder/saveStocker.ts
+++ b/src/idz/userdb/decoder/saveStocker.ts
@@ -11,7 +11,7 @@ export function saveStocker(buf: Buffer): SaveStockerRequest {
   return {
     type: "save_stocker_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
-
+    version: 1,
     backgrounds: bitmap(buf.slice(0x0008, 0x002c)),
     selectedCar: buf.readUInt16LE(0x009c) as CarSelector,
     chara: chara(buf.slice(0x009e, 0x00b2)),
diff --git a/src/idz/userdb/decoder/saveTeamBanner.ts b/src/idz/userdb/decoder/saveTeamBanner.ts
index 54afa4b..b023da4 100644
--- a/src/idz/userdb/decoder/saveTeamBanner.ts
+++ b/src/idz/userdb/decoder/saveTeamBanner.ts
@@ -9,6 +9,7 @@ export function saveTeamBanner(buf: Buffer): SaveTeamBannerRequest {
   return {
     type: "save_team_banner_req",
     teamExtId: buf.readUInt32LE(0x0004) as ExtId<Team>,
+    version: 1,
     nameBg: buf.readUInt32LE(0x0008),
     nameFx: buf.readUInt32LE(0x000c),
   };
diff --git a/src/idz/userdb/decoder/saveTimeAttack.ts b/src/idz/userdb/decoder/saveTimeAttack.ts
index 515218f..40c0f49 100644
--- a/src/idz/userdb/decoder/saveTimeAttack.ts
+++ b/src/idz/userdb/decoder/saveTimeAttack.ts
@@ -7,6 +7,7 @@ function saveTimeAttack(buf: Buffer): SaveTimeAttackRequest {
   return {
     type: "save_time_attack_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     dayNight: buf.readUInt8(0x0054) & 1,
     payload: {
       routeNo: (buf.readUInt8(0x0054) >> 1) as RouteNo,
diff --git a/src/idz/userdb/decoder/updateTeamLeader.ts b/src/idz/userdb/decoder/updateTeamLeader.ts
index 2a88823..0129840 100644
--- a/src/idz/userdb/decoder/updateTeamLeader.ts
+++ b/src/idz/userdb/decoder/updateTeamLeader.ts
@@ -11,6 +11,7 @@ export function updateTeamLeader(buf: Buffer): UpdateTeamLeaderRequest {
   return {
     type: "update_team_leader_req",
     aimeId: buf.readUInt32LE(0x0004) as AimeId,
+    version: 1,
     teamExtId: buf.readUInt32LE(0x0008) as ExtId<Team>,
     field_000C: readAsciiStr(buf, 0x000c, 0x0020),
   };
diff --git a/src/idz/userdb/decoder/updateTeamMember.ts b/src/idz/userdb/decoder/updateTeamMember.ts
index 3624978..d808b09 100644
--- a/src/idz/userdb/decoder/updateTeamMember.ts
+++ b/src/idz/userdb/decoder/updateTeamMember.ts
@@ -11,6 +11,7 @@ export function updateTeamMember(buf: Buffer): UpdateTeamMemberRequest {
     type: "update_team_member_req",
     action: buf.readUInt8(0x0004) === 0 ? "add" : "remove",
     aimeId: buf.readUInt32LE(0x0008) as AimeId,
+    version: 1,
     teamExtId: buf.readUInt32LE(0x000c) as ExtId<Team>,
   };
 }
diff --git a/src/idz/userdb/request/createAutoTeam.ts b/src/idz/userdb/request/createAutoTeam.ts
index 1b15194..94b5d60 100644
--- a/src/idz/userdb/request/createAutoTeam.ts
+++ b/src/idz/userdb/request/createAutoTeam.ts
@@ -3,6 +3,7 @@ import { AimeId } from "../../../model";
 export interface CreateAutoTeamRequest {
   type: "create_auto_team_req";
   aimeId: AimeId;
+  version: number;
   field_0008: number;
   field_000C: number;
 }
diff --git a/src/idz/userdb/request/createProfile.ts b/src/idz/userdb/request/createProfile.ts
index 8645025..05de31a 100644
--- a/src/idz/userdb/request/createProfile.ts
+++ b/src/idz/userdb/request/createProfile.ts
@@ -5,6 +5,7 @@ import { AimeId } from "../../../model";
 export interface CreateProfileRequest {
   type: "create_profile_req";
   aimeId: AimeId;
+  version: number;
   luid: string;
   name: string;
   field_0034: number;
diff --git a/src/idz/userdb/request/createTeam.ts b/src/idz/userdb/request/createTeam.ts
index 786c23a..f206445 100644
--- a/src/idz/userdb/request/createTeam.ts
+++ b/src/idz/userdb/request/createTeam.ts
@@ -3,6 +3,7 @@ import { AimeId } from "../../../model";
 export interface CreateTeamRequest {
   type: "create_team_req";
   aimeId: AimeId;
+  version: number;
   teamName: string; // len 0x20
   field_0028: number; // u16
   field_002C: number; // u32 (but only holds a u8)
diff --git a/src/idz/userdb/request/discoverProfile.ts b/src/idz/userdb/request/discoverProfile.ts
index a1e4bb3..941153f 100644
--- a/src/idz/userdb/request/discoverProfile.ts
+++ b/src/idz/userdb/request/discoverProfile.ts
@@ -3,4 +3,5 @@ import { AimeId } from "../../../model";
 export interface DiscoverProfileRequest {
   type: "discover_profile_req";
   aimeId: AimeId;
+  version: number;
 }
diff --git a/src/idz/userdb/request/loadGarage.ts b/src/idz/userdb/request/loadGarage.ts
index d3c2f9d..8b72259 100644
--- a/src/idz/userdb/request/loadGarage.ts
+++ b/src/idz/userdb/request/loadGarage.ts
@@ -3,6 +3,7 @@ import { AimeId } from "../../../model";
 export interface LoadGarageRequest {
   type: "load_garage_req";
   aimeId: AimeId;
+  version: number;
   fetchOffset: number;
   field_000A: number;
 }
diff --git a/src/idz/userdb/request/loadProfile.ts b/src/idz/userdb/request/loadProfile.ts
index de42473..63119ee 100644
--- a/src/idz/userdb/request/loadProfile.ts
+++ b/src/idz/userdb/request/loadProfile.ts
@@ -3,6 +3,7 @@ import { AimeId } from "../../../model";
 interface LoadProfileRequestBase {
   type: "load_profile_req";
   aimeId: AimeId;
+  version: number;
   luid: string;
 }
 
diff --git a/src/idz/userdb/request/loadStocker.ts b/src/idz/userdb/request/loadStocker.ts
index 10d5774..78b9d2f 100644
--- a/src/idz/userdb/request/loadStocker.ts
+++ b/src/idz/userdb/request/loadStocker.ts
@@ -3,4 +3,5 @@ import { AimeId } from "../../../model";
 export interface LoadStockerRequest {
   type: "load_stocker_req";
   aimeId: AimeId;
+  version: number;
 }
diff --git a/src/idz/userdb/request/loadTeam.ts b/src/idz/userdb/request/loadTeam.ts
index 034ae70..79eed07 100644
--- a/src/idz/userdb/request/loadTeam.ts
+++ b/src/idz/userdb/request/loadTeam.ts
@@ -4,5 +4,6 @@ import { Team } from "../model/team";
 export interface LoadTeamRequest {
   type: "load_team_req";
   aimeId: number;
+  version: number;
   teamExtId?: ExtId<Team>;
 }
diff --git a/src/idz/userdb/request/saveNewCar.ts b/src/idz/userdb/request/saveNewCar.ts
index 792f7f2..a0692f6 100644
--- a/src/idz/userdb/request/saveNewCar.ts
+++ b/src/idz/userdb/request/saveNewCar.ts
@@ -4,6 +4,7 @@ import { AimeId } from "../../../model";
 export interface SaveNewCarRequest {
   type: "save_new_car_req";
   aimeId: AimeId;
+  version: number;
   luid: string;
   car: Car;
   field_0080: number;
diff --git a/src/idz/userdb/request/saveProfile.ts b/src/idz/userdb/request/saveProfile.ts
index f84541a..71aaf54 100644
--- a/src/idz/userdb/request/saveProfile.ts
+++ b/src/idz/userdb/request/saveProfile.ts
@@ -10,6 +10,7 @@ import { AimeId } from "../../../model";
 interface SaveProfileRequestBase {
   type: "save_profile_req";
   aimeId: AimeId;
+  version: number;
   lv: number;
   exp: number;
   fame: number;
diff --git a/src/idz/userdb/request/saveSettings.ts b/src/idz/userdb/request/saveSettings.ts
index 68418a6..8be911a 100644
--- a/src/idz/userdb/request/saveSettings.ts
+++ b/src/idz/userdb/request/saveSettings.ts
@@ -4,6 +4,7 @@ import { AimeId } from "../../../model";
 export interface SaveSettingsRequest {
   type: "save_settings_req";
   aimeId: AimeId;
+  version: number;
   dpoint: number; // ?? why
   settings: Settings;
   field_0010: number;
diff --git a/src/idz/userdb/request/saveStocker.ts b/src/idz/userdb/request/saveStocker.ts
index 32488d3..e957273 100644
--- a/src/idz/userdb/request/saveStocker.ts
+++ b/src/idz/userdb/request/saveStocker.ts
@@ -6,6 +6,7 @@ import { AimeId } from "../../../model";
 export interface SaveStockerRequest {
   type: "save_stocker_req";
   aimeId: AimeId;
+  version: number;
   selectedCar: CarSelector;
   backgrounds: Set<BackgroundCode>;
   chara: Chara;
diff --git a/src/idz/userdb/request/saveTeamBanner.ts b/src/idz/userdb/request/saveTeamBanner.ts
index 0157e35..79d8cc5 100644
--- a/src/idz/userdb/request/saveTeamBanner.ts
+++ b/src/idz/userdb/request/saveTeamBanner.ts
@@ -4,6 +4,7 @@ import { Team } from "../model/team";
 export interface SaveTeamBannerRequest {
   type: "save_team_banner_req";
   teamExtId: ExtId<Team>;
+  version: number;
   nameBg: number;
   nameFx: number;
 }
diff --git a/src/idz/userdb/request/saveTimeAttack.ts b/src/idz/userdb/request/saveTimeAttack.ts
index ae79297..a4f888b 100644
--- a/src/idz/userdb/request/saveTimeAttack.ts
+++ b/src/idz/userdb/request/saveTimeAttack.ts
@@ -4,6 +4,7 @@ import { AimeId } from "../../../model";
 export interface SaveTimeAttackRequest {
   type: "save_time_attack_req";
   aimeId: AimeId;
+  version: number;
   dayNight: number;
   payload: TimeAttackScore;
   field_0002: number; // u16, always 1
diff --git a/src/idz/userdb/request/updateTeamLeader.ts b/src/idz/userdb/request/updateTeamLeader.ts
index c5f8f42..6b3544b 100644
--- a/src/idz/userdb/request/updateTeamLeader.ts
+++ b/src/idz/userdb/request/updateTeamLeader.ts
@@ -5,6 +5,7 @@ import { AimeId } from "../../../model";
 export interface UpdateTeamLeaderRequest {
   type: "update_team_leader_req";
   aimeId: AimeId;
+  version: number;
   teamExtId: ExtId<Team>;
   field_000C: string;
 }
diff --git a/src/idz/userdb/request/updateTeamMember.ts b/src/idz/userdb/request/updateTeamMember.ts
index aa293e7..5f31027 100644
--- a/src/idz/userdb/request/updateTeamMember.ts
+++ b/src/idz/userdb/request/updateTeamMember.ts
@@ -6,5 +6,6 @@ export interface UpdateTeamMemberRequest {
   type: "update_team_member_req";
   action: "add" | "remove";
   aimeId: AimeId;
+  version: number;
   teamExtId: ExtId<Team>;
 }