diff --git a/src/controllers/admin/mentor.controller.ts b/src/controllers/admin/mentor.controller.ts
index 18c5f0c..b0a2b26 100644
--- a/src/controllers/admin/mentor.controller.ts
+++ b/src/controllers/admin/mentor.controller.ts
@@ -6,6 +6,7 @@ import {
   findAllMentorEmails,
   getAllMentors,
   getMentor,
+  updateMentorDetails,
   updateMentorStatus
 } from '../../services/admin/mentor.service'
 import {
@@ -13,6 +14,67 @@ import {
   updateAvailability
 } from '../../services/mentor.service'
 import type { ApiResponse, PaginatedApiResponse } from '../../types'
+import { IMG_HOST } from '../../configs/envConfig'
+import { formatValidationErrors, upload } from '../../utils'
+import { mentorUpdateSchema } from '../../schemas/admin/admin.mentor-routes.schema'
+
+export const updateMentorHandler = async (
+  req: Request,
+  res: Response
+): Promise<ApiResponse<Mentor>> => {
+  const user = req.user as Profile
+
+  if (user.type !== ProfileTypes.ADMIN) {
+    return res.status(403).json({ message: 'Only Admins are allowed' })
+  }
+
+  try {
+    await new Promise<void>((resolve, reject) => {
+      upload(req, res, (err) => {
+        if (err) {
+          reject(err)
+        } else {
+          resolve()
+        }
+      })
+    })
+
+    const data = req.body.data ? JSON.parse(req.body.data) : req.body
+
+    const result = mentorUpdateSchema.safeParse(data)
+    if (!result.success) {
+      return res.status(400).json({
+        error: 'Invalid data',
+        details: formatValidationErrors(result.error)
+      })
+    }
+
+    const mentorUpdateData: Partial<Mentor> = { ...data }
+    const profileUpdateData: Partial<Profile> = { ...data.profile }
+
+    if (req.file) {
+      profileUpdateData.image_url = `${IMG_HOST}/${req.file.filename}`
+    }
+
+    const { mentorId } = req.params
+
+    const { mentor, statusCode, message } = await updateMentorDetails(
+      mentorId,
+      mentorUpdateData,
+      profileUpdateData
+    )
+    return res.status(statusCode).json({ mentor, message })
+  } catch (err) {
+    if (err instanceof Error) {
+      console.error('Error updating mentor details:', err)
+      return res.status(500).json({
+        error: 'Internal server error',
+        message: err.message
+      })
+    }
+    throw err
+  }
+}
 
 export const mentorStatusHandler = async (
   req: Request,
diff --git a/src/middlewares/requestValidator.ts b/src/middlewares/requestValidator.ts
index 6545928..7dd160d 100644
--- a/src/middlewares/requestValidator.ts
+++ b/src/middlewares/requestValidator.ts
@@ -4,7 +4,11 @@ import { ZodError, type ZodSchema } from 'zod'
 export const requestBodyValidator = <T extends ZodSchema>(schema: T) => {
   return (req: Request, res: Response, next: NextFunction) => {
     try {
-      schema.parse(req.body)
+      if (req.body.data) {
+        schema.parse(JSON.parse(req.body.data))
+      } else {
+        schema.parse(req.body)
+      }
       next()
     } catch (err) {
       console.log(err)
diff --git a/src/routes/admin/mentor/mentor.route.ts b/src/routes/admin/mentor/mentor.route.ts
index a312299..98902ef 100644
--- a/src/routes/admin/mentor/mentor.route.ts
+++ b/src/routes/admin/mentor/mentor.route.ts
@@ -5,7 +5,8 @@ import {
   mentorDetailsHandler,
   mentorStatusHandler,
   searchMentors,
-  updateMentorAvailability
+  updateMentorAvailability,
+  updateMentorHandler
 } from '../../../controllers/admin/mentor.controller'
 import { requireAuth } from '../../../controllers/auth.controller'
 import {
@@ -23,6 +24,7 @@ import { paginationSchema } from '../../../schemas/common/pagination-request.sch
 
 const mentorRouter = express.Router()
 
+mentorRouter.put('/:mentorId', requireAuth, updateMentorHandler)
 mentorRouter.put(
   '/:mentorId/state',
   [requireAuth, requestBodyValidator(mentorStatusSchema)],
diff --git a/src/schemas/admin/admin.mentor-routes.schema.ts b/src/schemas/admin/admin.mentor-routes.schema.ts
index 64006cf..46de531 100644
--- a/src/schemas/admin/admin.mentor-routes.schema.ts
+++ b/src/schemas/admin/admin.mentor-routes.schema.ts
@@ -1,5 +1,6 @@
 import { z } from 'zod'
 import { MentorApplicationStatus } from '../../enums'
+import { updateProfileSchema } from '../profile-routes.schema'
 
 export const mentorStatusSchema = z.object({
   state: z.nativeEnum(MentorApplicationStatus)
@@ -20,3 +21,10 @@ export const updateMentorAvailabilitySchema = z.object({
 export const searchMentorsSchema = z.object({
   q: z.string().or(z.undefined())
 })
+
+export const mentorUpdateSchema = z.object({
+  availability: z.boolean().optional(),
+  application: z.record(z.string(), z.any()).optional(),
+  category: z.string().uuid().optional(),
+  profile: updateProfileSchema.optional()
+})
diff --git a/src/services/admin/mentor.service.ts b/src/services/admin/mentor.service.ts
index aa062fb..bd2fc85 100644
--- a/src/services/admin/mentor.service.ts
+++ b/src/services/admin/mentor.service.ts
@@ -1,7 +1,9 @@
 import { dataSource } from '../../configs/dbConfig'
+import Category from '../../entities/category.entity'
 import Mentor from '../../entities/mentor.entity'
+import Profile from '../../entities/profile.entity'
 import type { MentorApplicationStatus } from '../../enums'
-import { type PaginatedApiResponse } from '../../types'
+import { type CreateProfile, type PaginatedApiResponse } from '../../types'
 import { getEmailContent } from '../../utils'
 import { sendEmail } from './email.service'
 
@@ -54,6 +56,102 @@ export const updateMentorStatus = async (
   }
 }
 
+export const updateMentorDetails = async (
+  mentorId: string,
+  mentorData: Partial<Mentor>,
+  profileData?: Partial<Profile>
+): Promise<{
+  statusCode: number
+  mentor?: Mentor | null
+  message: string
+}> => {
+  try {
+    const mentorRepository = dataSource.getRepository(Mentor)
+    const profileRepository = dataSource.getRepository(Profile)
+    const categoryRepository = dataSource.getRepository(Category)
+
+    const mentor = await mentorRepository.findOne({
+      where: { uuid: mentorId },
+      relations: ['profile']
+    })
+
+    if (!mentor) {
+      return {
+        statusCode: 404,
+        message: 'Mentor not found'
+      }
+    }
+
+    if (mentorData.availability !== undefined) {
+      mentor.availability = mentorData.availability
+    }
+
+    if (mentorData.category) {
+      if (typeof mentorData.category === 'string') {
+        const category = await categoryRepository.findOne({
+          where: { uuid: mentorData.category }
+        })
+
+        if (!category) {
+          return {
+            statusCode: 404,
+            message: 'Category not found'
+          }
+        }
+        mentor.category = category
+      }
+    }
+
+    // will override values of keys if exisitng keys provided. add new key-value pairs if not exists
+    if (mentorData.application) {
+      mentor.application = {
+        ...mentor.application,
+        ...mentorData.application
+      }
+    }
+
+    await mentorRepository.save(mentor)
+
+    if (profileData && mentor.profile) {
+      const updatedProfileData: Partial<Profile> = {}
+
+      if (profileData.primary_email) {
+        updatedProfileData.primary_email = profileData.primary_email
+      }
+      if (profileData.first_name) {
+        updatedProfileData.first_name = profileData.first_name
+      }
+      if (profileData.last_name) {
+        updatedProfileData.last_name = profileData.last_name
+      }
+      if (profileData.image_url) {
+        updatedProfileData.image_url = profileData.image_url
+      }
+
+      if (Object.keys(updatedProfileData).length > 0) {
+        await profileRepository.update(
+          { uuid: mentor.profile.uuid },
+          updatedProfileData as CreateProfile
+        )
+      }
+    }
+
+    const updatedMentor = await mentorRepository.findOne({
+      where: { uuid: mentorId },
+      relations: ['profile', 'category']
+    })
+
+    return {
+      statusCode: 200,
+      mentor: updatedMentor,
+      message: 'Updated Mentor details successfully'
+    }
+  } catch (err) {
+    console.error('Error updating the mentor details', err)
+    throw new Error('Error updating the mentor details')
+  }
+}
+
 export const getAllMentors = async ({
   status,
   pageNumber,
diff --git a/src/utils.ts b/src/utils.ts
index 839e423..51d1a0f 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -10,6 +10,7 @@ import { generateCertificate } from './services/admin/generateCertificate'
 import { randomUUID } from 'crypto'
 import { certificatesDir } from './app'
 import type Mentee from './entities/mentee.entity'
+import { type ZodError } from 'zod'
 
 export const signAndSetCookie = (res: Response, uuid: string): void => {
   const token = jwt.sign({ userId: uuid }, JWT_SECRET ?? '')
@@ -290,3 +291,11 @@ export const getPasswordChangedEmailContent = (
 export const capitalizeFirstLetter = (word: string): string => {
   return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
 }
+
+export const formatValidationErrors = (
+  err: ZodError
+): Array<{ message: string }> => {
+  return err.errors.map((issue) => ({
+    message: `${issue.path.join('.')} is ${issue.message}`
+  }))
+}