diff --git a/package.json b/package.json
index 0c4b3f448..573267680 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pearl",
-  "version": "2.3.3",
+  "version": "2.4.0",
   "private": true,
   "dependencies": {
     "@emotion/react": "^11.11.1",
@@ -12,8 +12,8 @@
     "@mui/styles": "^5.15.10",
     "@mui/x-date-pickers": "^6.18.6",
     "date-fns": "^2.30.0",
-    "dexie": "^3.2.1",
-    "dexie-react-hooks": "^1.1.1",
+    "dexie": "^4.0.9",
+    "dexie-react-hooks": "^1.1.7",
     "keycloak-js": "^26.0.5",
     "postcss": "8.4.31",
     "react": "^18.2.0",
diff --git a/src/types/pearl.d.ts b/src/types/pearl.d.ts
deleted file mode 100644
index a083508aa..000000000
--- a/src/types/pearl.d.ts
+++ /dev/null
@@ -1,145 +0,0 @@
-export {};
-
-declare global {
-  type SurveyUnitPhoneNumber = {
-    source: string;
-    favorite: boolean;
-    number: string;
-  };
-
-  type SurveyUnitPerson = {
-    id: number;
-    title: string;
-    firstName: string;
-    lastName: string;
-    email: string;
-    birthdate: number;
-    favoriteEmail: boolean;
-    privileged: boolean;
-    phoneNumbers: SurveyUnitPhoneNumber[];
-  };
-
-  type SurveyUnitAddress = {
-    l1: string;
-    l2: string;
-    l3: string;
-    l4: string;
-    l5: string;
-    l6: string;
-    l7: string;
-    elevator: boolean;
-    building: string;
-    floor: string;
-    door: string;
-    staircase: string;
-    cityPriorityDistrict: boolean;
-  };
-
-  type SurveyUnitComment = {
-    type: string;
-    value: string;
-  };
-
-  type SurveyUnitState = {
-    id: number;
-    date: number;
-    type: string;
-  };
-
-  type SurveyUnitSampleIdentifiers = {
-    bs: number;
-    ec: string;
-    le: number;
-    noi: number;
-    numfa: number;
-    rges: number;
-    ssech: number;
-    nolog: number;
-    nole: number;
-    autre: string;
-    nograp: string;
-  };
-
-  type SurveyUnitIdentification = {
-    identification: unknown;
-    access: unknown;
-    situation: unknown;
-    category: unknown;
-    occupant: unknown;
-  };
-
-  type SurveyUnitContactAttempt = {
-    status: string;
-    date: number;
-    medium: string;
-  };
-
-  type SurveyUnitCommunicationRequest = {
-    emitter: 'INTERVIEWER' | 'TOOL';
-    communicationTemplateId?: string;
-    reason?: string;
-    status: { date: number; status: string }[];
-  };
-
-  type SurveyUnitNewCommunicationRequest = {
-    communicationTemplateId: string;
-    reason: string;
-    creationTimestamp: number;
-  };
-
-  type SurveyUnitCommunicationTemplate = {
-    medium: string;
-    reason: string;
-    type: string;
-    id: string;
-  };
-
-  type SurveyUnit = {
-    displayName: string;
-    id: string;
-    persons: SurveyUnitPerson[];
-    address: SurveyUnitAddress;
-    priority: boolean;
-    move: boolean;
-    campaign: string;
-    comments: SurveyUnitComment[];
-    sampleIdentifiers: SurveyUnitSampleIdentifiers;
-    states: SurveyUnitState[];
-    contactAttempts: SurveyUnitContactAttempt[];
-    contactOutcome?: { date: number; totalNumberOfContactAttempts: number; type: string };
-    identification: SurveyUnitIdentification;
-    campaignLabel: string;
-    managementStartDate: number;
-    interviewerStartDate: number;
-    identificationPhaseStartDate: number;
-    collectionStartDate: number;
-    collectionEndDate: number;
-    endDate: number;
-    identificationConfiguration: string;
-    contactOutcomeConfiguration: string;
-    contactAttemptConfiguration: string;
-    useLetterCommunication: boolean;
-    communicationRequests: SurveyUnitCommunicationRequest[];
-    communicationTemplates: SurveyUnitCommunicationTemplate[];
-  };
-
-  type Notification = {
-    date: number;
-    type: string;
-    title: string;
-    messages: string[];
-    state: 'warning' | 'success' | 'error';
-    read: boolean;
-    detail: string;
-    id: number;
-  };
-
-  type SyncResult = {
-    state: string;
-    messages: string[];
-    details: {
-      transmittedSurveyUnits: Record<string, string[]>;
-      loadedSurveyUnits: Record<string, string[]>;
-    };
-  };
-}
diff --git a/src/types/pearl.ts b/src/types/pearl.ts
new file mode 100644
index 000000000..d77cee74c
--- /dev/null
+++ b/src/types/pearl.ts
@@ -0,0 +1,141 @@
+type SurveyUnitPhoneNumber = {
+  source: string;
+  favorite: boolean;
+  number: string;
+};
+
+type SurveyUnitPerson = {
+  id: number;
+  title: string;
+  firstName: string;
+  lastName: string;
+  email: string;
+  birthdate: number;
+  favoriteEmail: boolean;
+  privileged: boolean;
+  phoneNumbers: SurveyUnitPhoneNumber[];
+};
+
+type SurveyUnitAddress = {
+  l1: string;
+  l2: string;
+  l3: string;
+  l4: string;
+  l5: string;
+  l6: string;
+  l7: string;
+  elevator: boolean;
+  building: string;
+  floor: string;
+  door: string;
+  staircase: string;
+  cityPriorityDistrict: boolean;
+};
+
+type SurveyUnitComment = {
+  type: string;
+  value: string;
+};
+
+type SurveyUnitState = {
+  id: number;
+  date: number;
+  type: string;
+};
+
+type SurveyUnitSampleIdentifiers = {
+  bs: number;
+  ec: string;
+  le: number;
+  noi: number;
+  numfa: number;
+  rges: number;
+  ssech: number;
+  nolog: number;
+  nole: number;
+  autre: string;
+  nograp: string;
+};
+
+type SurveyUnitIdentification = {
+  identification: unknown;
+  access: unknown;
+  situation: unknown;
+  category: unknown;
+  occupant: unknown;
+};
+
+type SurveyUnitContactAttempt = {
+  status: string;
+  date: number;
+  medium: string;
+};
+
+type SurveyUnitCommunicationRequest = {
+  emitter: 'INTERVIEWER' | 'TOOL';
+  communicationTemplateId?: string;
+  reason?: string;
+  status: { date: number; status: string }[];
+};
+
+type SurveyUnitNewCommunicationRequest = {
+  communicationTemplateId: string;
+  reason: string;
+  creationTimestamp: number;
+};
+
+type SurveyUnitCommunicationTemplate = {
+  medium: string;
+  reason: string;
+  type: string;
+  id: string;
+};
+
+export type SurveyUnit = {
+  displayName: string;
+  id: string;
+  persons: SurveyUnitPerson[];
+  address: SurveyUnitAddress;
+  priority: boolean;
+  move: boolean;
+  campaign: string;
+  comments: SurveyUnitComment[];
+  sampleIdentifiers: SurveyUnitSampleIdentifiers;
+  states: SurveyUnitState[];
+  contactAttempts: SurveyUnitContactAttempt[];
+  contactOutcome?: { date: number; totalNumberOfContactAttempts: number; type: string };
+  identification: SurveyUnitIdentification;
+  campaignLabel: string;
+  managementStartDate: number;
+  interviewerStartDate: number;
+  identificationPhaseStartDate: number;
+  collectionStartDate: number;
+  collectionEndDate: number;
+  endDate: number;
+  identificationConfiguration: string;
+  contactOutcomeConfiguration: string;
+  contactAttemptConfiguration: string;
+  useLetterCommunication: boolean;
+  communicationRequests: SurveyUnitCommunicationRequest[];
+  communicationTemplates: SurveyUnitCommunicationTemplate[];
+};
+
+export type Notification = {
+  date: number;
+  type: string;
+  title: string;
+  messages: string[];
+  state: 'warning' | 'success' | 'error';
+  read: boolean;
+  detail: string;
+  id: number;
+};
+
+export type SyncResult = {
+  state: string;
+  messages: string[];
+  details: {
+    transmittedSurveyUnits: Record<string, string[]>;
+    loadedSurveyUnits: Record<string, string[]>;
+  };
+};
diff --git a/src/utils/indexeddb/idb-config.js b/src/utils/indexeddb/idb-config.ts
similarity index 58%
rename from src/utils/indexeddb/idb-config.js
rename to src/utils/indexeddb/idb-config.ts
index 13c3b1d5b..693ec1c82 100644
--- a/src/utils/indexeddb/idb-config.js
+++ b/src/utils/indexeddb/idb-config.ts
@@ -1,11 +1,23 @@
-import Dexie from 'dexie';
+import Dexie, { type EntityTable } from 'dexie';
 import schema from './schema.json';
 import schema2 from './schema-2.json';
 import schema3 from './schema-3.json';
 import schema4 from './schema-4.json';
 import schema5 from './schema-5.json';
+import { User } from './model/user';
+import { SyncReport } from './model/syncReport';
+import { SurveyUnitMissing } from './model/surveyUnitMissing';
+import type { SurveyUnit, Notification } from '../../types/pearl';
 
-export const db = new Dexie('Pearl');
+export const db = new Dexie('Pearl') as Dexie & {
+  notification: EntityTable<Notification, 'id'>;
+  user: EntityTable<User, 'id'>;
+  syncReport: EntityTable<SyncReport, 'id'>;
+  surveyUnitMissing: EntityTable<SurveyUnitMissing, 'id'>;
+  surveyUnit: EntityTable<SurveyUnit, 'id'>;
+};
+
+export type { User, SyncReport, Notification, SurveyUnitMissing, SurveyUnit };
 
 db.version(1).stores(schema);
 // upgrade dataBase (please see https://dexie.org/docs/Tutorial/Design#database-versioning)
diff --git a/src/utils/indexeddb/model/surveyUnitMissing.ts b/src/utils/indexeddb/model/surveyUnitMissing.ts
new file mode 100644
index 000000000..ce400f1fc
--- /dev/null
+++ b/src/utils/indexeddb/model/surveyUnitMissing.ts
@@ -0,0 +1,3 @@
+export type SurveyUnitMissing = {
+  id: string;
+};
diff --git a/src/utils/indexeddb/model/syncReport.ts b/src/utils/indexeddb/model/syncReport.ts
new file mode 100644
index 000000000..f6193045c
--- /dev/null
+++ b/src/utils/indexeddb/model/syncReport.ts
@@ -0,0 +1,7 @@
+import { type SyncResult } from '../../../types/pearl';
+
+export type SyncReport = {
+  id: string;
+  transmittedSurveyUnits: SyncResult['details']['transmittedSurveyUnits'];
+  loadedSurveyUnits: SyncResult['details']['loadedSurveyUnits'];
+};
diff --git a/src/utils/indexeddb/model/user.ts b/src/utils/indexeddb/model/user.ts
new file mode 100644
index 000000000..dbeb284b5
--- /dev/null
+++ b/src/utils/indexeddb/model/user.ts
@@ -0,0 +1,9 @@
+export type User = {
+  id: string;
+  civility: string;
+  email: string;
+  firstName: string;
+  lastName: string;
+  phoneNumber: string;
+  title: string;
+};
diff --git a/src/utils/indexeddb/services/abstract-idb-service.js b/src/utils/indexeddb/services/abstract-idb-service.ts
similarity index 59%
rename from src/utils/indexeddb/services/abstract-idb-service.js
rename to src/utils/indexeddb/services/abstract-idb-service.ts
index ecfb17355..a0cc4ca25 100644
--- a/src/utils/indexeddb/services/abstract-idb-service.js
+++ b/src/utils/indexeddb/services/abstract-idb-service.ts
@@ -1,15 +1,20 @@
+import { type Table } from 'dexie';
 import { db } from '../idb-config';
 
-export default class AbstractIdbService {
-  constructor(store) {
-    this.store = db[store];
+export type ID = string | number;
+
+export default class AbstractIdbService<T extends { id: ID }> {
+  private store;
+
+  constructor(store: keyof typeof db) {
+    this.store = db[store] as Table;
   }
 
-  get(id) {
+  get(id: ID) {
     return this.store.get({ id: Number(id) });
   }
 
-  getById(id) {
+  getById(id: ID) {
     return this.store.get(id);
   }
 
@@ -17,19 +22,19 @@ export default class AbstractIdbService {
     return this.store.toArray();
   }
 
-  getAllSortedBy(indexedVariable) {
+  getAllSortedBy(indexedVariable: string | string[]) {
     return this.store.orderBy(indexedVariable).toArray();
   }
 
-  insert(item) {
+  insert(item: T) {
     return this.store.add(item);
   }
 
-  update(item) {
+  update(item: T) {
     return this.store.put(item);
   }
 
-  delete(id) {
+  delete(id: ID) {
     return this.store.delete(id);
   }
 
@@ -37,7 +42,7 @@ export default class AbstractIdbService {
     return this.store.clear();
   }
 
-  async addOrUpdate(item) {
+  async addOrUpdate(item: T) {
     if (item.id) {
       if ((await this.store.get(item.id)) === undefined) {
         return this.insert(item);
@@ -47,11 +52,11 @@ export default class AbstractIdbService {
     return 0;
   }
 
-  addAll(items) {
+  addAll(items: T[]) {
     return this.store.bulkPut(items);
   }
 
-  deleteByIds(ids) {
+  deleteByIds(ids: string[]) {
     return this.store.bulkDelete(ids);
   }
 }
diff --git a/src/utils/indexeddb/services/notification-idb-service.js b/src/utils/indexeddb/services/notification-idb-service.ts
similarity index 69%
rename from src/utils/indexeddb/services/notification-idb-service.js
rename to src/utils/indexeddb/services/notification-idb-service.ts
index e70f20ce3..2598b25a3 100644
--- a/src/utils/indexeddb/services/notification-idb-service.js
+++ b/src/utils/indexeddb/services/notification-idb-service.ts
@@ -1,11 +1,12 @@
 import AbstractIdbService from './abstract-idb-service';
+import { type Notification } from '../idb-config';
 
-class NotificationIdbService extends AbstractIdbService {
+class NotificationIdbService extends AbstractIdbService<Notification> {
   constructor() {
     super('notification');
   }
 
-  async addOrUpdateNotif(item) {
+  async addOrUpdateNotif(item: Notification) {
     const { id } = item;
     /* prevent duplicated survey-unit */
     if (id) {
diff --git a/src/utils/indexeddb/services/surveyUnit-idb-service.js b/src/utils/indexeddb/services/surveyUnit-idb-service.ts
similarity index 78%
rename from src/utils/indexeddb/services/surveyUnit-idb-service.js
rename to src/utils/indexeddb/services/surveyUnit-idb-service.ts
index 5b578cd26..a668a6149 100644
--- a/src/utils/indexeddb/services/surveyUnit-idb-service.js
+++ b/src/utils/indexeddb/services/surveyUnit-idb-service.ts
@@ -1,16 +1,14 @@
 import AbstractIdbService from './abstract-idb-service';
-
-class SurveyUnitIdbService extends AbstractIdbService {
+import { type SurveyUnit } from '../idb-config';
+class SurveyUnitIdbService extends AbstractIdbService<SurveyUnit> {
   constructor() {
     super('surveyUnit');
   }
 
   /**
    * Update or insert a surveyUnit if the ID is unknown
-   * @param {SurveyUnit} item
-   * @returns {Promise<void>}
    */
-  async addOrUpdateSU(item) {
+  async addOrUpdateSU(item: SurveyUnit) {
     const { id, ...other } = item;
     const surveyUnit = await this.getById(id);
     /* prevent duplicated survey-unit */
diff --git a/src/utils/indexeddb/services/surveyUnitMissing-idb-service.js b/src/utils/indexeddb/services/surveyUnitMissing-idb-service.ts
similarity index 54%
rename from src/utils/indexeddb/services/surveyUnitMissing-idb-service.js
rename to src/utils/indexeddb/services/surveyUnitMissing-idb-service.ts
index a2f20beaf..999b72c12 100644
--- a/src/utils/indexeddb/services/surveyUnitMissing-idb-service.js
+++ b/src/utils/indexeddb/services/surveyUnitMissing-idb-service.ts
@@ -1,6 +1,7 @@
+import { type SurveyUnitMissing } from '../idb-config';
 import AbstractIdbService from './abstract-idb-service';
 
-class SurveyUnitMissingIdbService extends AbstractIdbService {
+class SurveyUnitMissingIdbService extends AbstractIdbService<SurveyUnitMissing> {
   constructor() {
     super('surveyUnitMissing');
   }
diff --git a/src/utils/indexeddb/services/syncReport-idb-service.js b/src/utils/indexeddb/services/syncReport-idb-service.ts
similarity index 67%
rename from src/utils/indexeddb/services/syncReport-idb-service.js
rename to src/utils/indexeddb/services/syncReport-idb-service.ts
index d4edb049a..c53ee21a7 100644
--- a/src/utils/indexeddb/services/syncReport-idb-service.js
+++ b/src/utils/indexeddb/services/syncReport-idb-service.ts
@@ -1,11 +1,12 @@
 import AbstractIdbService from './abstract-idb-service';
+import { type SyncReport } from '../idb-config';
 
-class SyncReportIdbService extends AbstractIdbService {
+class SyncReportIdbService extends AbstractIdbService<SyncReport> {
   constructor() {
     super('syncReport');
   }
 
-  async addOrUpdateReport(item) {
+  async addOrUpdateReport(item: SyncReport) {
     const { id, ...other } = item;
     const report = await this.getById(id);
     if (report) {
diff --git a/src/utils/indexeddb/services/user-idb-service.js b/src/utils/indexeddb/services/user-idb-service.ts
similarity index 58%
rename from src/utils/indexeddb/services/user-idb-service.js
rename to src/utils/indexeddb/services/user-idb-service.ts
index b63200ea5..15c39bc44 100644
--- a/src/utils/indexeddb/services/user-idb-service.js
+++ b/src/utils/indexeddb/services/user-idb-service.ts
@@ -1,6 +1,7 @@
 import AbstractIdbService from './abstract-idb-service';
+import { type User } from '../idb-config';
 
-class UserIdbService extends AbstractIdbService {
+class UserIdbService extends AbstractIdbService<User> {
   constructor() {
     super('user');
   }
diff --git a/yarn.lock b/yarn.lock
index e6dfd4c5e..1fb21bf8a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2564,15 +2564,15 @@ dequal@^2.0.3:
   resolved "https://registry.yarnpkg.com/dequal/-/dequal-2.0.3.tgz#2644214f1997d39ed0ee0ece72335490a7ac67be"
   integrity sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==
 
-dexie-react-hooks@^1.1.1:
+dexie-react-hooks@^1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/dexie-react-hooks/-/dexie-react-hooks-1.1.7.tgz#75bd92a609a7c3dc3643e2fd21e7db5df6df923b"
   integrity sha512-Lwv5W0Hk+uOW3kGnsU9GZoR1er1B7WQ5DSdonoNG+focTNeJbHW6vi6nBoX534VKI3/uwHebYzSw1fwY6a7mTw==
 
-dexie@^3.2.1:
-  version "3.2.4"
-  resolved "https://registry.yarnpkg.com/dexie/-/dexie-3.2.4.tgz#b22a9729be1102acb2eee16102ea6e2bc76454cf"
-  integrity sha512-VKoTQRSv7+RnffpOJ3Dh6ozknBqzWw/F3iqMdsZg958R0AS8AnY9x9d1lbwENr0gzeGJHXKcGhAMRaqys6SxqA==
+dexie@^4.0.9:
+  version "4.0.9"
+  resolved "https://registry.yarnpkg.com/dexie/-/dexie-4.0.9.tgz#8c4e827815a84ef4fdc6aa7923f89ea2cda87610"
+  integrity sha512-VQG1huEVSAdDZssb9Bb9mFy+d3jAE0PT4d1nIRYlT46ip1fzbs1tXi0SlUayRDgV3tTbJG8ZRqAo2um49gtynA==
 
 doctrine@^2.1.0:
   version "2.1.0"