diff --git a/dictation_server/src/api/odms/openapi.json b/dictation_server/src/api/odms/openapi.json
index 53a4fdf..b8e5b6c 100644
--- a/dictation_server/src/api/odms/openapi.json
+++ b/dictation_server/src/api/odms/openapi.json
@@ -409,7 +409,7 @@
       "post": {
         "operationId": "updateTypistGroup",
         "summary": "",
-        "description": "ログインしているユーザーのアカウント配下でIDで指定されたタイピストグループを編集します",
+        "description": "ログインしているユーザーのアカウント配下でIDで指定されたタイピストグループを更新します",
         "parameters": [
           {
             "name": "typistGroupId",
diff --git a/dictation_server/src/features/accounts/accounts.controller.ts b/dictation_server/src/features/accounts/accounts.controller.ts
index ee2e6dd..390fc48 100644
--- a/dictation_server/src/features/accounts/accounts.controller.ts
+++ b/dictation_server/src/features/accounts/accounts.controller.ts
@@ -363,7 +363,7 @@ export class AccountsController {
   @ApiOperation({
     operationId: 'updateTypistGroup',
     description:
-      'ログインしているユーザーのアカウント配下でIDで指定されたタイピストグループを編集します',
+      'ログインしているユーザーのアカウント配下でIDで指定されたタイピストグループを更新します',
   })
   @ApiBearerAuth()
   @UseGuards(AuthGuard)
@@ -374,13 +374,22 @@ export class AccountsController {
     @Body() body: UpdateTypistGroupRequest,
     @Param() param: UpdateTypistGroupRequestParam,
   ): Promise<CreateTypistGroupResponse> {
+    const { typistGroupName, typistIds } = body;
+    const { typistGroupId } = param;
+
     // アクセストークン取得
     const accessToken = retrieveAuthorizationToken(req);
-    const payload = jwt.decode(accessToken, { json: true }) as AccessToken;
+    const { userId } = jwt.decode(accessToken, { json: true }) as AccessToken;
 
-    console.log(param.typistGroupId);
-    console.log(body.typistGroupName);
-    console.log(body.typistIds);
+    const context = makeContext(userId);
+
+    await this.accountService.updateTypistGroup(
+      context,
+      userId,
+      typistGroupId,
+      typistGroupName,
+      typistIds,
+    );
 
     return {};
   }
diff --git a/dictation_server/src/features/accounts/accounts.service.spec.ts b/dictation_server/src/features/accounts/accounts.service.spec.ts
index ce53585..153a529 100644
--- a/dictation_server/src/features/accounts/accounts.service.spec.ts
+++ b/dictation_server/src/features/accounts/accounts.service.spec.ts
@@ -18,7 +18,6 @@ import {
   getSortCriteria,
   getTypistGroup,
   getTypistGroupMember,
-  createTypistGroup,
 } from './test/utility';
 import { DataSource } from 'typeorm';
 import { makeTestingModule } from '../../common/test/modules';
@@ -2633,28 +2632,31 @@ describe('getTypistGroup', () => {
     // アカウントにタイピストグループを作成する
     const typistGroupName = 'typist-group-name';
 
-    const { id: typistGroupId } = await createTypistGroup(
-      source,
-      account.id,
+    const service = module.get<AccountsService>(AccountsService);
+    const context = makeContext(admin.external_id);
+
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
       typistGroupName,
       userIds,
     );
 
     //作成したデータを確認
+
+    const group = await getTypistGroup(source, account.id);
     {
-      const group = await getTypistGroup(source, account.id);
       expect(group.length).toBe(1);
       expect(group[0].name).toBe(typistGroupName);
       const groupUsers = await getTypistGroupMember(source, group[0].id);
       expect(groupUsers.length).toBe(3);
       expect(groupUsers.map((user) => user.user_id)).toEqual(userIds);
     }
-    const service = module.get<AccountsService>(AccountsService);
-    const context = makeContext(admin.external_id);
+
     const typistGroup = await service.getTypistGroup(
       context,
       admin.external_id,
-      typistGroupId,
+      group[0].id,
     );
     //実行結果を確認
     {
@@ -2688,7 +2690,14 @@ describe('getTypistGroup', () => {
 
     // アカウントにタイピストグループを作成する
     const typistGroupName = 'typist-group-name';
-    await createTypistGroup(source, account.id, typistGroupName, userIds);
+    const service = module.get<AccountsService>(AccountsService);
+    const context = makeContext(admin.external_id);
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      userIds,
+    );
 
     //作成したデータを確認
     {
@@ -2699,8 +2708,6 @@ describe('getTypistGroup', () => {
       expect(groupUsers.length).toBe(3);
       expect(groupUsers.map((user) => user.user_id)).toEqual(userIds);
     }
-    const service = module.get<AccountsService>(AccountsService);
-    const context = makeContext(admin.external_id);
 
     try {
       await service.getTypistGroup(context, admin.external_id, 999);
@@ -2736,25 +2743,25 @@ describe('getTypistGroup', () => {
 
     // アカウントにタイピストグループを作成する
     const typistGroupName = 'typist-group-name';
+    const service = module.get<AccountsService>(AccountsService);
+    const context = makeContext(admin.external_id);
 
-    const { id: typistGroupId } = await createTypistGroup(
-      source,
-      account.id,
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
       typistGroupName,
       userIds,
     );
 
     //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
     {
-      const group = await getTypistGroup(source, account.id);
       expect(group.length).toBe(1);
       expect(group[0].name).toBe(typistGroupName);
       const groupUsers = await getTypistGroupMember(source, group[0].id);
       expect(groupUsers.length).toBe(3);
       expect(groupUsers.map((user) => user.user_id)).toEqual(userIds);
     }
-    const service = module.get<AccountsService>(AccountsService);
-    const context = makeContext(admin.external_id);
 
     //DBアクセスに失敗するようにする
     const typistGroupService = module.get<UserGroupsRepositoryService>(
@@ -2765,7 +2772,349 @@ describe('getTypistGroup', () => {
       .mockRejectedValue('DB failed');
 
     try {
-      await service.getTypistGroup(context, admin.external_id, typistGroupId);
+      await service.getTypistGroup(context, admin.external_id, group[0].id);
+    } catch (e) {
+      if (e instanceof HttpException) {
+        expect(e.getStatus()).toEqual(HttpStatus.INTERNAL_SERVER_ERROR);
+        expect(e.getResponse()).toEqual(makeErrorResponse('E009999'));
+      } else {
+        fail();
+      }
+    }
+  });
+});
+
+describe('updateTypistGroup', () => {
+  let source: DataSource = null;
+  beforeEach(async () => {
+    source = new DataSource({
+      type: 'sqlite',
+      database: ':memory:',
+      logging: false,
+      entities: [__dirname + '/../../**/*.entity{.ts,.js}'],
+      synchronize: true, // trueにすると自動的にmigrationが行われるため注意
+    });
+    return source.initialize();
+  });
+
+  afterEach(async () => {
+    await source.destroy();
+    source = null;
+  });
+  it('TypistGroupを更新できる', async () => {
+    const module = await makeTestingModule(source);
+    // 第五階層のアカウント作成
+    const { account, admin } = await makeTestAccount(source, { tier: 5 });
+    // 作成したアカウントにユーザーを３名追加する
+    const typiptUserExternalIds = [
+      'typist-user-external-id1',
+      'typist-user-external-id2',
+      'typist-user-external-id3',
+    ];
+    const userIds: number[] = [];
+    for (const typiptUserExternalId of typiptUserExternalIds) {
+      const { id: userId } = await makeTestUser(source, {
+        account_id: account.id,
+        external_id: typiptUserExternalId,
+        role: USER_ROLES.TYPIST,
+      });
+      userIds.push(userId);
+    }
+
+    const service = module.get<AccountsService>(AccountsService);
+    const typistUserIds = [userIds[1]];
+    const context = makeContext(admin.external_id);
+    const typistGroupName = 'typist-group-name';
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      [userIds[0]],
+    );
+
+    //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
+    {
+      const group = await getTypistGroup(source, account.id);
+      expect(group.length).toBe(1);
+      expect(group[0].name).toBe(typistGroupName);
+      const groupUsers = await getTypistGroupMember(source, group[0].id);
+      expect(groupUsers.length).toBe(1);
+      expect(groupUsers[0].user_group_id).toEqual(group[0].id);
+      expect(groupUsers[0].user_id).toEqual(userIds[0]);
+    }
+
+    const updateTypistGroupName = 'typist-group-name-update';
+
+    await service.updateTypistGroup(
+      context,
+      admin.external_id,
+      group[0].id,
+      updateTypistGroupName,
+      typistUserIds,
+    );
+    //実行結果を確認
+    {
+      const typistGroups = await getTypistGroup(source, account.id);
+      expect(typistGroups.length).toBe(1);
+      expect(typistGroups[0].name).toBe(updateTypistGroupName);
+
+      const typistGroupUsers = await getTypistGroupMember(
+        source,
+        typistGroups[0].id,
+      );
+      expect(typistGroupUsers.length).toBe(1);
+      expect(typistGroupUsers[0].user_id).toEqual(userIds[1]);
+    }
+  });
+  it('typistIdsにRole:typist以外のユーザーが含まれていた場合、400エラーを返却する', async () => {
+    const module = await makeTestingModule(source);
+    // 第五階層のアカウント作成
+    const { account, admin } = await makeTestAccount(source, { tier: 5 });
+    // 作成したアカウントにユーザーを３名追加する
+    const typiptUserExternalIds = [
+      'typist-user-external-id1',
+      'typist-user-external-id2',
+      'typist-user-external-id3',
+    ];
+    const userIds: number[] = [];
+    for (const typiptUserExternalId of typiptUserExternalIds) {
+      const { id: userId } = await makeTestUser(source, {
+        account_id: account.id,
+        external_id: typiptUserExternalId,
+        role:
+          typiptUserExternalId === 'typist-user-external-id3'
+            ? USER_ROLES.NONE
+            : USER_ROLES.TYPIST, //typist-user-external-id3のみRole:none
+      });
+      userIds.push(userId);
+    }
+
+    const typistGroupName = 'typist-group-name';
+    const service = module.get<AccountsService>(AccountsService);
+    const typistUserIds = [userIds[2]];
+    const context = makeContext(admin.external_id);
+
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      [userIds[0]],
+    );
+
+    //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
+    {
+      expect(group.length).toBe(1);
+      expect(group[0].name).toBe(typistGroupName);
+      const groupUsers = await getTypistGroupMember(source, group[0].id);
+      expect(groupUsers.length).toBe(1);
+      expect(groupUsers[0].user_group_id).toEqual(group[0].id);
+      expect(groupUsers[0].user_id).toEqual(userIds[0]);
+    }
+
+    const updateTypistGroupName = 'typist-group-name-update';
+
+    try {
+      await service.updateTypistGroup(
+        context,
+        admin.external_id,
+        group[0].id,
+        updateTypistGroupName,
+        typistUserIds,
+      );
+    } catch (e) {
+      if (e instanceof HttpException) {
+        expect(e.getStatus()).toEqual(HttpStatus.BAD_REQUEST);
+        expect(e.getResponse()).toEqual(makeErrorResponse('E010204'));
+      } else {
+        fail();
+      }
+    }
+  });
+  it('typistIdsに存在しないユーザーが含まれていた場合、400エラーを返却する', async () => {
+    const module = await makeTestingModule(source);
+    // 第五階層のアカウント作成
+    const { account, admin } = await makeTestAccount(source, { tier: 5 });
+    // 作成したアカウントにユーザーを３名追加する
+    const typiptUserExternalIds = [
+      'typist-user-external-id1',
+      'typist-user-external-id2',
+      'typist-user-external-id3',
+    ];
+    const userIds: number[] = [];
+    for (const typiptUserExternalId of typiptUserExternalIds) {
+      const { id: userId } = await makeTestUser(source, {
+        account_id: account.id,
+        external_id: typiptUserExternalId,
+        role: USER_ROLES.TYPIST,
+      });
+      userIds.push(userId);
+    }
+
+    const typistGroupName = 'typist-group-name';
+    const service = module.get<AccountsService>(AccountsService);
+    const typistUserIds = [999];
+    const context = makeContext(admin.external_id);
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      [userIds[0]],
+    );
+
+    //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
+    {
+      expect(group.length).toBe(1);
+      expect(group[0].name).toBe(typistGroupName);
+      const groupUsers = await getTypistGroupMember(source, group[0].id);
+      expect(groupUsers.length).toBe(1);
+      expect(groupUsers[0].user_group_id).toEqual(group[0].id);
+      expect(groupUsers[0].user_id).toEqual(userIds[0]);
+    }
+    const updateTypistGroupName = 'typist-group-name-update';
+
+    try {
+      await service.updateTypistGroup(
+        context,
+        admin.external_id,
+        group[0].id,
+        updateTypistGroupName,
+        typistUserIds,
+      );
+    } catch (e) {
+      if (e instanceof HttpException) {
+        expect(e.getStatus()).toEqual(HttpStatus.BAD_REQUEST);
+        expect(e.getResponse()).toEqual(makeErrorResponse('E010204'));
+      } else {
+        fail();
+      }
+    }
+  });
+  it('タイピストグループが存在しない場合、400エラーを返却する', async () => {
+    const module = await makeTestingModule(source);
+    // 第五階層のアカウント作成
+    const { account, admin } = await makeTestAccount(source, { tier: 5 });
+
+    // 作成したアカウントにユーザーを３名追加する
+    const typiptUserExternalIds = [
+      'typist-user-external-id1',
+      'typist-user-external-id2',
+      'typist-user-external-id3',
+    ];
+    const userIds: number[] = [];
+    for (const typiptUserExternalId of typiptUserExternalIds) {
+      const { id: userId } = await makeTestUser(source, {
+        account_id: account.id,
+        external_id: typiptUserExternalId,
+        role: USER_ROLES.TYPIST,
+      });
+      userIds.push(userId);
+    }
+
+    const typistGroupName = 'typist-group-name';
+    const service = module.get<AccountsService>(AccountsService);
+    const typistUserIds = [userIds[1]];
+    const context = makeContext(admin.external_id);
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      [userIds[0]],
+    );
+
+    //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
+    {
+      expect(group.length).toBe(1);
+      expect(group[0].name).toBe(typistGroupName);
+      const groupUsers = await getTypistGroupMember(source, group[0].id);
+      expect(groupUsers.length).toBe(1);
+      expect(groupUsers[0].user_group_id).toEqual(group[0].id);
+      expect(groupUsers[0].user_id).toEqual(userIds[0]);
+    }
+
+    const updateTypistGroupName = 'typist-group-name-update';
+
+    try {
+      await service.updateTypistGroup(
+        context,
+        admin.external_id,
+        999,
+        updateTypistGroupName,
+        typistUserIds,
+      );
+    } catch (e) {
+      if (e instanceof HttpException) {
+        expect(e.getStatus()).toEqual(HttpStatus.BAD_REQUEST);
+        expect(e.getResponse()).toEqual(makeErrorResponse('E010908'));
+      } else {
+        fail();
+      }
+    }
+  });
+  it('DBアクセスに失敗した場合、500エラーを返却する', async () => {
+    const module = await makeTestingModule(source);
+    // 第五階層のアカウント作成
+    const { account, admin } = await makeTestAccount(source, { tier: 5 });
+    // 作成したアカウントにユーザーを３名追加する
+    const typiptUserExternalIds = [
+      'typist-user-external-id1',
+      'typist-user-external-id2',
+      'typist-user-external-id3',
+    ];
+    const userIds: number[] = [];
+    for (const typiptUserExternalId of typiptUserExternalIds) {
+      const { id: userId } = await makeTestUser(source, {
+        account_id: account.id,
+        external_id: typiptUserExternalId,
+        role: USER_ROLES.TYPIST,
+      });
+      userIds.push(userId);
+    }
+
+    const typistGroupName = 'typist-group-name';
+    const service = module.get<AccountsService>(AccountsService);
+    const typistUserIds = [userIds[1]];
+    const context = makeContext(admin.external_id);
+    await service.createTypistGroup(
+      context,
+      admin.external_id,
+      typistGroupName,
+      [userIds[0]],
+    );
+
+    //作成したデータを確認
+    const group = await getTypistGroup(source, account.id);
+    {
+      const group = await getTypistGroup(source, account.id);
+      expect(group.length).toBe(1);
+      expect(group[0].name).toBe(typistGroupName);
+      const groupUsers = await getTypistGroupMember(source, group[0].id);
+      expect(groupUsers.length).toBe(1);
+      expect(groupUsers[0].user_group_id).toEqual(group[0].id);
+      expect(groupUsers[0].user_id).toEqual(userIds[0]);
+    }
+
+    const updateTypistGroupName = 'typist-group-name-update';
+
+    //DBアクセスに失敗するようにする
+    const typistGroupService = module.get<UserGroupsRepositoryService>(
+      UserGroupsRepositoryService,
+    );
+    typistGroupService.updateTypistGroup = jest
+      .fn()
+      .mockRejectedValue('DB failed');
+
+    try {
+      await service.updateTypistGroup(
+        context,
+        admin.external_id,
+        group[0].id,
+        updateTypistGroupName,
+        typistUserIds,
+      );
     } catch (e) {
       if (e instanceof HttpException) {
         expect(e.getStatus()).toEqual(HttpStatus.INTERNAL_SERVER_ERROR);
diff --git a/dictation_server/src/features/accounts/accounts.service.ts b/dictation_server/src/features/accounts/accounts.service.ts
index f649b81..f93df46 100644
--- a/dictation_server/src/features/accounts/accounts.service.ts
+++ b/dictation_server/src/features/accounts/accounts.service.ts
@@ -41,8 +41,10 @@ import {
   OrderNotFoundError,
 } from '../../repositories/licenses/errors/types';
 import { BlobstorageService } from '../../gateways/blobstorage/blobstorage.service';
-import { TypistGroupNotExistError } from '../../repositories/user_groups/errors/types';
-import { TypistIdInvalidError } from '../../repositories/user_groups/errors/types';
+import {
+  TypistGroupNotExistError,
+  TypistIdInvalidError,
+} from '../../repositories/user_groups/errors/types';
 
 @Injectable()
 export class AccountsService {
@@ -981,4 +983,70 @@ export class AccountsService {
       );
     }
   }
+
+  /**
+   * タイピストグループを更新する
+   * @param context
+   * @param externalId
+   * @param typistGroupId
+   * @param typistGroupName
+   * @param typistIds
+   * @returns typist group
+   */
+  async updateTypistGroup(
+    context: Context,
+    externalId: string,
+    typistGroupId: number,
+    typistGroupName: string,
+    typistIds: number[],
+  ): Promise<void> {
+    this.logger.log(
+      `[IN] [${context.trackingId}] ${this.updateTypistGroup.name} | params: { typistGroupId: ${typistGroupId}, typistGroupName: ${typistGroupName}, typistIds: ${typistIds} };`,
+    );
+    try {
+      // 外部IDをもとにユーザー情報を取得する
+      const { account_id } = await this.usersRepository.findUserByExternalId(
+        externalId,
+      );
+
+      // タイピストグループと所属するタイピストを更新する
+      await this.userGroupsRepository.updateTypistGroup(
+        account_id,
+        typistGroupId,
+        typistGroupName,
+        typistIds,
+      );
+    } catch (e) {
+      this.logger.error(`error=${e}`);
+      if (e instanceof Error) {
+        switch (e.constructor) {
+          // タイピストIDが存在しない場合は400エラーを返す
+          case TypistIdInvalidError:
+            throw new HttpException(
+              makeErrorResponse('E010204'),
+              HttpStatus.BAD_REQUEST,
+            );
+          // タイピストグループIDが存在しない場合は400エラーを返す
+          case TypistGroupNotExistError:
+            throw new HttpException(
+              makeErrorResponse('E010908'),
+              HttpStatus.BAD_REQUEST,
+            );
+          default:
+            throw new HttpException(
+              makeErrorResponse('E009999'),
+              HttpStatus.INTERNAL_SERVER_ERROR,
+            );
+        }
+      }
+      throw new HttpException(
+        makeErrorResponse('E009999'),
+        HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    } finally {
+      this.logger.log(
+        `[OUT] [${context.trackingId}] ${this.updateTypistGroup.name}`,
+      );
+    }
+  }
 }
diff --git a/dictation_server/src/features/accounts/test/utility.ts b/dictation_server/src/features/accounts/test/utility.ts
index af9a47d..ef8cdb6 100644
--- a/dictation_server/src/features/accounts/test/utility.ts
+++ b/dictation_server/src/features/accounts/test/utility.ts
@@ -108,34 +108,3 @@ export const getTypistGroupMember = async (
     },
   });
 };
-
-// タイピストグループを作成する
-export const createTypistGroup = async (
-  datasource: DataSource,
-  accountId: number,
-  name: string,
-  memberIds: number[],
-): Promise<UserGroup> => {
-  const { identifiers } = await datasource.getRepository(UserGroup).insert({
-    account_id: accountId,
-    name: name,
-    created_by: 'test_runner',
-    created_at: new Date(),
-    updated_by: 'updater',
-    updated_at: new Date(),
-  });
-  const userGroup = identifiers.pop() as UserGroup;
-
-  for (const memberId of memberIds) {
-    await datasource.getRepository(UserGroupMember).insert({
-      user_group_id: userGroup.id,
-      user_id: memberId,
-      created_by: 'test_runner',
-      created_at: new Date(),
-      updated_by: 'updater',
-      updated_at: new Date(),
-    });
-  }
-
-  return userGroup;
-};
diff --git a/dictation_server/src/features/accounts/types/types.ts b/dictation_server/src/features/accounts/types/types.ts
index 98d0b6d..0b1074d 100644
--- a/dictation_server/src/features/accounts/types/types.ts
+++ b/dictation_server/src/features/accounts/types/types.ts
@@ -174,6 +174,7 @@ export class UpdateTypistGroupRequest {
   @IsArray()
   @IsInt({ each: true })
   @Min(0, { each: true })
+  @IsUnique()
   typistIds: number[];
 }
 export class UpdateTypistGroupRequestParam {
diff --git a/dictation_server/src/repositories/user_groups/user_groups.repository.service.ts b/dictation_server/src/repositories/user_groups/user_groups.repository.service.ts
index ffd9dbc..2c15584 100644
--- a/dictation_server/src/repositories/user_groups/user_groups.repository.service.ts
+++ b/dictation_server/src/repositories/user_groups/user_groups.repository.service.ts
@@ -2,9 +2,8 @@ import { Injectable } from '@nestjs/common';
 import { DataSource, In, IsNull } from 'typeorm';
 import { UserGroup } from './entity/user_group.entity';
 import { UserGroupMember } from './entity/user_group_member.entity';
-import { TypistGroupNotExistError } from './errors/types';
 import { User } from '../users/entity/user.entity';
-import { TypistIdInvalidError } from './errors/types';
+import { TypistGroupNotExistError, TypistIdInvalidError } from './errors/types';
 import { USER_ROLES } from '../../constants';
 
 @Injectable()
@@ -130,4 +129,72 @@ export class UserGroupsRepositoryService {
       return userGroup;
     });
   }
+
+  /**
+   * 指定したIDのタイピストグループを更新し、そのタイピストグループとtypistIdsのユーザーを紐付ける
+   * @param accountId
+   * @param name
+   * @param typistIds
+   * @returns createdTypistGroup
+   */
+  async updateTypistGroup(
+    accountId: number,
+    typistGroupId: number,
+    typistGroupName: string,
+    typistIds: number[],
+  ): Promise<UserGroup> {
+    return await this.dataSource.transaction(async (entityManager) => {
+      const userGroupRepo = entityManager.getRepository(UserGroup);
+      const userGroupMemberRepo = entityManager.getRepository(UserGroupMember);
+      // typistIdsのidを持つユーザーが、account_idのアカウントに所属していて、かつ、roleがtypistであることを確認する
+      const userRepo = entityManager.getRepository(User);
+      const userRecords = await userRepo.find({
+        where: {
+          id: In(typistIds),
+          account_id: accountId,
+          role: USER_ROLES.TYPIST,
+        },
+      });
+      if (userRecords.length !== typistIds.length) {
+        throw new TypistIdInvalidError(
+          `Typist user not exists Error. typistIds:${typistIds}; typistIds(DB):${userRecords.map(
+            (x) => x.id,
+          )}`,
+        );
+      }
+
+      // GroupIdが自アカウント内に存在するか確認する
+      const typistGroup = await userGroupRepo.findOne({
+        where: {
+          id: typistGroupId,
+          account_id: accountId,
+        },
+      });
+      if (!typistGroup) {
+        throw new TypistGroupNotExistError(
+          `TypistGroup not exists Error. accountId: ${accountId}; typistGroupId: ${typistGroupId}`,
+        );
+      }
+
+      // 対象のタイピストグループを更新する
+      // ユーザーグループ名を更新する
+      typistGroup.name = typistGroupName;
+      await userGroupRepo.save(typistGroup);
+
+      // user_group_membersテーブルから対象のタイピストグループのユーザーを削除する
+      await userGroupMemberRepo.delete({
+        user_group_id: typistGroupId,
+      });
+
+      const typistGroupMembers = userRecords.map((typist) => {
+        return {
+          user_group_id: typistGroup.id,
+          user_id: typist.id,
+        };
+      });
+      await userGroupMemberRepo.save(typistGroupMembers);
+
+      return typistGroup;
+    });
+  }
 }