diff --git a/src/profile-fields/dto/update-field.dto.ts b/src/profile-fields/dto/update-field.dto.ts
index 424c1bc..b2647c1 100644
--- a/src/profile-fields/dto/update-field.dto.ts
+++ b/src/profile-fields/dto/update-field.dto.ts
@@ -1,4 +1,10 @@
 import { PartialType, OmitType } from '@nestjs/swagger';
+import { IsOptional, IsString, Matches } from 'class-validator';
 import { CreateFieldDto } from './create-field.dto';
 
-export class UpdateFieldDto extends PartialType(OmitType(CreateFieldDto, ['sectionId'] as const)) {}
+export class UpdateFieldDto extends PartialType(OmitType(CreateFieldDto, ['sectionId'] as const)) {
+  @IsOptional()
+  @IsString()
+  @Matches(/^[a-z0-9_]+$/, { message: 'Slug must contain only lowercase letters, numbers, and underscores' })
+  slug?: string;
+}
diff --git a/src/profile-fields/profile-fields.service.ts b/src/profile-fields/profile-fields.service.ts
index 12f6d24..1c4eb52 100644
--- a/src/profile-fields/profile-fields.service.ts
+++ b/src/profile-fields/profile-fields.service.ts
@@ -134,11 +134,24 @@ export class ProfileFieldsService {
 
     const data: any = { ...updateFieldDto };
 
-    // If name is being updated, update the slug too
-    if (updateFieldDto.name) {
-      const newSlug = this.generateSlug(updateFieldDto.name);
-
-      // Check if new slug conflicts within the section
+    // If slug is explicitly provided, use it; otherwise auto-generate from name
+    if (updateFieldDto.slug) {
+      const newSlug = updateFieldDto.slug;
+      const existing = await this.prisma.profileField.findFirst({
+        where: {
+          AND: [
+            { id: { not: id } },
+            { sectionId: field.sectionId },
+            { slug: newSlug },
+          ],
+        },
+      });
+      if (existing) {
+        throw new ConflictException('A field with this slug already exists in this section');
+      }
+      data.slug = newSlug;
+    } else if (updateFieldDto.name) {
+      const newSlug = this.generateSlug(updateFieldDto.name);
       const existing = await this.prisma.profileField.findFirst({
         where: {
           AND: [
@@ -148,11 +161,9 @@ export class ProfileFieldsService {
           ],
         },
       });
-
       if (existing) {
         throw new ConflictException('A field with this name already exists in this section');
       }
-
       data.slug = newSlug;
     }