diff --git a/backend/src/routes/assistantes_maternelles/assistantes_maternelles.service.ts b/backend/src/routes/assistantes_maternelles/assistantes_maternelles.service.ts
index 9949126..66a3c97 100644
--- a/backend/src/routes/assistantes_maternelles/assistantes_maternelles.service.ts
+++ b/backend/src/routes/assistantes_maternelles/assistantes_maternelles.service.ts
@@ -13,6 +13,7 @@ import { Children, StatutEnfantType } from 'src/entities/children.entity';
 import { CreateAssistanteDto } from '../user/dto/create_assistante.dto';
 import { UpdateAssistanteDto } from '../user/dto/update_assistante.dto';
 import { UpdateAmFicheAdminDto } from './dto/update-am-fiche-admin.dto';
+import { validateNir } from 'src/common/utils/nir.util';
 
 const AM_CHILDREN_RELATIONS = ['user', 'amChildren', 'amChildren.child'] as const;
 
@@ -99,6 +100,15 @@ export class AssistantesMaternellesService {
     if (dto.ville !== undefined) user.ville = dto.ville;
     if (dto.code_postal !== undefined) user.code_postal = dto.code_postal;
     if (dto.statut !== undefined) user.statut = dto.statut;
+    if (dto.date_naissance !== undefined) {
+      user.date_naissance = dto.date_naissance ? new Date(dto.date_naissance) : undefined;
+    }
+    if (dto.lieu_naissance_ville !== undefined) {
+      user.lieu_naissance_ville = dto.lieu_naissance_ville || undefined;
+    }
+    if (dto.lieu_naissance_pays !== undefined) {
+      user.lieu_naissance_pays = dto.lieu_naissance_pays || undefined;
+    }
 
     await this.usersRepository.save(user);
 
@@ -109,6 +119,33 @@ export class AssistantesMaternellesService {
     if (dto.places_available !== undefined) amPatch.places_available = dto.places_available;
     if (dto.biography !== undefined) amPatch.biography = dto.biography;
     if (dto.available !== undefined) amPatch.available = dto.available;
+    if (dto.agreement_date !== undefined) {
+      amPatch.agreement_date = dto.agreement_date ? new Date(dto.agreement_date) : undefined;
+    }
+
+    if (dto.nir !== undefined) {
+      const nirNormalized = dto.nir.replace(/\s/g, '').toUpperCase();
+      if (nirNormalized) {
+        const nirValidation = validateNir(nirNormalized, {
+          dateNaissance:
+            dto.date_naissance ?? user.date_naissance?.toISOString().slice(0, 10),
+        });
+        if (!nirValidation.valid) {
+          throw new BadRequestException(nirValidation.error || 'NIR invalide');
+        }
+        const nirDejaUtilise = await this.assistantesMaternelleRepository.findOne({
+          where: { nir: nirNormalized },
+        });
+        if (nirDejaUtilise && nirDejaUtilise.user_id !== amUserId) {
+          throw new ConflictException(
+            'Un compte assistante maternelle avec ce numéro NIR existe déjà.',
+          );
+        }
+        amPatch.nir = nirNormalized;
+      } else {
+        (amPatch as { nir?: string | null }).nir = null;
+      }
+    }
 
     if (Object.keys(amPatch).length > 0) {
       await this.assistantesMaternelleRepository.update(amUserId, amPatch);
diff --git a/backend/src/routes/assistantes_maternelles/dto/update-am-fiche-admin.dto.ts b/backend/src/routes/assistantes_maternelles/dto/update-am-fiche-admin.dto.ts
index 81a665d..cbac068 100644
--- a/backend/src/routes/assistantes_maternelles/dto/update-am-fiche-admin.dto.ts
+++ b/backend/src/routes/assistantes_maternelles/dto/update-am-fiche-admin.dto.ts
@@ -1,6 +1,7 @@
 import { ApiPropertyOptional } from '@nestjs/swagger';
 import {
   IsBoolean,
+  IsDateString,
   IsEmail,
   IsEnum,
   IsInt,
@@ -59,12 +60,40 @@ export class UpdateAmFicheAdminDto {
   @IsEnum(StatutUtilisateurType)
   statut?: StatutUtilisateurType;
 
+  @ApiPropertyOptional({ example: '123456789012345' })
+  @IsOptional()
+  @IsString()
+  @MaxLength(15)
+  nir?: string;
+
+  @ApiPropertyOptional({ example: '1985-03-12' })
+  @IsOptional()
+  @IsDateString()
+  date_naissance?: string;
+
+  @ApiPropertyOptional({ example: 'Lyon' })
+  @IsOptional()
+  @IsString()
+  @MaxLength(100)
+  lieu_naissance_ville?: string;
+
+  @ApiPropertyOptional({ example: 'France' })
+  @IsOptional()
+  @IsString()
+  @MaxLength(100)
+  lieu_naissance_pays?: string;
+
   @ApiPropertyOptional({ example: 'AGR-2024-12345' })
   @IsOptional()
   @IsString()
   @MaxLength(50)
   approval_number?: string;
 
+  @ApiPropertyOptional({ example: '2020-01-15' })
+  @IsOptional()
+  @IsDateString()
+  agreement_date?: string;
+
   @ApiPropertyOptional({ example: 'Lyon' })
   @IsOptional()
   @IsString()