diff --git a/package.json b/package.json
index 162504e4..65a5d8c7 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "file-type-checker": "^1.0.8",
     "fp-ts": "^2.16.1",
     "jsonwebtoken": "^9.0.0",
-    "le-coffre-resources": "git@github.com:smart-chain-fr/leCoffre-resources.git#v2.105",
+    "le-coffre-resources": "git@github.com:smart-chain-fr/leCoffre-resources.git#v2.106",
     "module-alias": "^2.2.2",
     "monocle-ts": "^2.3.13",
     "multer": "^1.4.5-lts.1",
diff --git a/src/app/api/customer/AuthController.ts b/src/app/api/customer/AuthController.ts
index ab47bf6e..e62ea8b0 100644
--- a/src/app/api/customer/AuthController.ts
+++ b/src/app/api/customer/AuthController.ts
@@ -35,7 +35,7 @@ export default class AuthController extends ApiController {
 				return;
 			}
 			this.httpSuccess(response, {
-				partialPhoneNumber: res.customer.contact?.cell_phone_number.replace(/\s/g, "").slice(-4),
+				partialPhoneNumber: res.customer.contact?.cell_phone_number?.replace(/\s/g, "").slice(-4),
 				totpCodeUid: res.totpCode.uid,
 			});
 		} catch (error) {
@@ -58,7 +58,7 @@ export default class AuthController extends ApiController {
 				this.httpNotFoundRequest(response, "Customer not found");
 				return;
 			}
-			this.httpSuccess(response, { partialPhoneNumber: customer.contact?.cell_phone_number.replace(/\s/g, "").slice(-4) });
+			this.httpSuccess(response, { partialPhoneNumber: customer.contact?.cell_phone_number?.replace(/\s/g, "").slice(-4) });
 		} catch (error) {
 			if (error instanceof SmsNotExpiredError) {
 				this.httpTooEarlyRequest(response, error.message);
@@ -229,7 +229,7 @@ export default class AuthController extends ApiController {
 				return;
 			}
 			this.httpSuccess(response, {
-				partialPhoneNumber: res.customer.contact?.cell_phone_number.replace(/\s/g, "").slice(-4),
+				partialPhoneNumber: res.customer.contact?.cell_phone_number?.replace(/\s/g, "").slice(-4),
 				totpCodeUid: res.totpCode.uid,
 			});
 		} catch (error) {
diff --git a/src/common/databases/migrations/20231219140925_20231219_cellphone_not_required/migration.sql b/src/common/databases/migrations/20231219140925_20231219_cellphone_not_required/migration.sql
new file mode 100644
index 00000000..4763e7c0
--- /dev/null
+++ b/src/common/databases/migrations/20231219140925_20231219_cellphone_not_required/migration.sql
@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "contacts" ALTER COLUMN "cell_phone_number" DROP NOT NULL;
diff --git a/src/common/databases/schema.prisma b/src/common/databases/schema.prisma
index 77d5f2d3..9d72ec44 100644
--- a/src/common/databases/schema.prisma
+++ b/src/common/databases/schema.prisma
@@ -37,7 +37,7 @@ model Contacts {
   last_name         String     @db.VarChar(255)
   email             String     @db.VarChar(255)
   phone_number      String?    @db.VarChar(50)
-  cell_phone_number String     @db.VarChar(50)
+  cell_phone_number String?     @db.VarChar(50)
   civility          ECivility  @default(MALE)
   address           Addresses? @relation(fields: [address_uid], references: [uid], onDelete: Cascade)
   address_uid       String?    @unique @db.VarChar(255)
diff --git a/src/common/repositories/UsersRepository.ts b/src/common/repositories/UsersRepository.ts
index 718f6066..c0f466e6 100644
--- a/src/common/repositories/UsersRepository.ts
+++ b/src/common/repositories/UsersRepository.ts
@@ -56,7 +56,7 @@ export default class UsersRepository extends BaseRepository {
 						last_name: user.contact!.last_name,
 						email: user.contact!.email,
 						phone_number: user.contact?.phone_number,
-						cell_phone_number: user.contact!.cell_phone_number,
+						cell_phone_number: user.contact!.cell_phone_number || null,
 						civility: ECivility[user.contact?.civility as keyof typeof ECivility],
 					},
 				},