diff --git a/packages/cockroach/src/adapter.ts b/packages/cockroach/src/adapter.ts
index 0349e1e269..56d065d5a6 100644
--- a/packages/cockroach/src/adapter.ts
+++ b/packages/cockroach/src/adapter.ts
@@ -45,7 +45,7 @@ import {
   type LinkPreviewData,
   type LinkPreviewID,
   type MessageExtra,
-  type BlobData
+  type BlobData, BlobUpdateData
 } from '@hcengineering/communication-types'
 import type {
   DbAdapter,
@@ -162,6 +162,16 @@ export class CockroachAdapter implements DbAdapter {
     await this.message.setBlobs(cardId, messageId, blobs, socialId, date)
   }
 
+  async updateBlobs (
+    cardId: CardID,
+    messageId: MessageID,
+    blobs: BlobUpdateData[],
+    socialId: SocialID,
+    date: Date
+  ): Promise<void> {
+    await this.message.updateBlobs(cardId, messageId, blobs, socialId, date)
+  }
+
   async attachLinkPreviews (
     cardId: CardID,
     messageId: MessageID,
diff --git a/packages/cockroach/src/db/message.ts b/packages/cockroach/src/db/message.ts
index a5cef55d01..eaffbee23d 100644
--- a/packages/cockroach/src/db/message.ts
+++ b/packages/cockroach/src/db/message.ts
@@ -20,6 +20,7 @@ import {
   AttachThreadPatchData,
   type BlobData,
   type BlobID,
+  BlobUpdateData,
   type CardID,
   type CardType,
   DetachBlobsPatchData,
@@ -40,6 +41,7 @@ import {
   type SocialID,
   SortingOrder,
   type Thread,
+  UpdateBlobsPatchData,
   UpdateThreadPatchData
 } from '@hcengineering/communication-types'
 import type { ThreadUpdates, ThreadQuery } from '@hcengineering/communication-sdk-types'
@@ -298,6 +300,65 @@ export class MessagesDb extends BaseDb {
     })
   }
 
+  async updateBlobs (
+    cardId: CardID,
+    messageId: MessageID,
+    blobs: BlobUpdateData[],
+    socialId: SocialID,
+    date: Date
+  ): Promise<void> {
+    if (blobs.length === 0) return
+
+    const colMap = {
+      mimeType: { col: 'type', cast: '::varchar' },
+      fileName: { col: 'filename', cast: '::varchar' },
+      size: { col: 'size', cast: '::int8' },
+      metadata: { col: 'meta', cast: '::jsonb' }
+    } as const
+    type UpdateKey = keyof typeof colMap
+    const updateKeys = Object.keys(colMap) as UpdateKey[]
+
+    const params: any[] = [this.workspace, cardId, messageId]
+
+    const rowLen = 1 + updateKeys.length
+
+    const tuples = blobs.map((blob, i) => {
+      params.push(blob.blobId)
+      updateKeys.forEach((k) => params.push(blob[k] ?? null))
+
+      const offset = 3 + i * rowLen
+      const casts = ['::uuid', ...updateKeys.map((k) => colMap[k].cast)]
+      const placeholders = casts.map((cast, idx) => `$${offset + idx + 1}${cast}`)
+      return `(${placeholders.join(', ')})`
+    })
+
+    const setClauses = updateKeys.map((k) => {
+      const col = colMap[k].col
+      return `${col} = COALESCE(v.${col}, f.${col})`
+    })
+
+    const updateSql = `
+        UPDATE ${TableName.File} AS f
+        SET ${setClauses.join(',\n  ')}
+        FROM (VALUES ${tuples.join(',\n    ')}) AS v(blob_id, ${updateKeys.map((k) => colMap[k].col).join(', ')})
+        WHERE f.workspace_id = $1::uuid
+          AND f.card_id = $2::varchar
+          AND f.message_id = $3::varchar
+          AND f.blob_id = v.blob_id;
+    `
+
+    const inDb = await this.isMessageInDb(cardId, messageId)
+    if (!inDb) {
+      await this.getRowClient().begin(async (txn) => {
+        await this.execute(updateSql, params, 'update blobs', txn)
+        const data: UpdateBlobsPatchData = { operation: 'update', blobs }
+        await this.createPatch(cardId, messageId, PatchType.blob, data, socialId, date, txn)
+      })
+    } else {
+      await this.execute(updateSql, params, 'update blobs')
+    }
+  }
+
   async attachLinkPreviews (
     cardId: CardID,
     messageId: MessageID,
diff --git a/packages/sdk-types/src/db.ts b/packages/sdk-types/src/db.ts
index b651db6dcb..820ee92746 100644
--- a/packages/sdk-types/src/db.ts
+++ b/packages/sdk-types/src/db.ts
@@ -44,7 +44,7 @@ import {
   NotificationType,
   BlobData,
   LinkPreviewData,
-  LinkPreviewID
+  LinkPreviewID, BlobUpdateData
 } from '@hcengineering/communication-types'
 
 export interface DbAdapter {
@@ -76,6 +76,7 @@ export interface DbAdapter {
   attachBlobs: (cardId: CardID, messageId: MessageID, data: BlobData[], socialId: SocialID, date: Date) => Promise<void>
   detachBlobs: (card: CardID, messageId: MessageID, blobId: BlobID[], socialId: SocialID, date: Date) => Promise<void>
   setBlobs: (cardId: CardID, messageId: MessageID, data: BlobData[], socialId: SocialID, date: Date) => Promise<void>
+  updateBlobs: (cardId: CardID, messageId: MessageID, data: BlobUpdateData[], socialId: SocialID, date: Date) => Promise<void>
 
   attachLinkPreviews: (
     cardId: CardID,
diff --git a/packages/sdk-types/src/events/message.ts b/packages/sdk-types/src/events/message.ts
index 06000715a0..28a50e0b82 100644
--- a/packages/sdk-types/src/events/message.ts
+++ b/packages/sdk-types/src/events/message.ts
@@ -10,7 +10,8 @@ import type {
   MessagesGroup,
   MessageExtra,
   BlobData,
-  LinkPreviewData
+  LinkPreviewData,
+  BlobUpdateData
 } from '@hcengineering/communication-types'
 
 import type { BaseEvent } from './common'
@@ -134,6 +135,11 @@ export interface SetBlobsOperation {
   blobs: BlobData[]
 }
 
+export interface UpdateBlobsOperation {
+  opcode: 'update'
+  blobs: BlobUpdateData[]
+}
+
 // For system and message author
 export interface BlobPatchEvent extends BaseEvent {
   type: MessageEventType.BlobPatch
@@ -141,7 +147,7 @@ export interface BlobPatchEvent extends BaseEvent {
   cardId: CardID
   messageId: MessageID
 
-  operations: (AttachBlobsOperation | DetachBlobsOperation | SetBlobsOperation)[]
+  operations: (AttachBlobsOperation | DetachBlobsOperation | SetBlobsOperation | UpdateBlobsOperation)[]
 
   socialId: SocialID
   date?: Date
diff --git a/packages/server/src/middleware/db.ts b/packages/server/src/middleware/db.ts
index e05bdb3229..b3374ac99b 100644
--- a/packages/server/src/middleware/db.ts
+++ b/packages/server/src/middleware/db.ts
@@ -271,6 +271,8 @@ export class DatabaseMiddleware extends BaseMiddleware implements Middleware {
         await this.db.detachBlobs(event.cardId, event.messageId, operation.blobIds, event.socialId, event.date)
       } else if (operation.opcode === 'set') {
         await this.db.setBlobs(event.cardId, event.messageId, operation.blobs, event.socialId, event.date)
+      } else if (operation.opcode === 'update') {
+        await this.db.updateBlobs(event.cardId, event.messageId, operation.blobs, event.socialId, event.date)
       }
     }
 
diff --git a/packages/server/src/middleware/validate.ts b/packages/server/src/middleware/validate.ts
index d3193dfdc8..f734275c54 100644
--- a/packages/server/src/middleware/validate.ts
+++ b/packages/server/src/middleware/validate.ts
@@ -167,6 +167,14 @@ const BlobDataSchema = z.object({
   metadata: z.record(z.string(), z.any()).optional()
 })
 
+const UpdateBlobDataSchema = z.object({
+  blobId: BlobIDSchema,
+  mimeType: z.string().optional(),
+  fileName: z.string().optional(),
+  size: z.number().optional(),
+  metadata: z.record(z.string(), z.any()).optional()
+})
+
 const LinkPreviewDataSchema = z
   .object({
     previewId: LinkPreviewIDSchema,
@@ -329,7 +337,8 @@ const ReactionPatchEventSchema = BaseEventSchema.extend({
 const BlobOperationSchema = z.union([
   z.object({ opcode: z.literal('attach'), blobs: z.array(BlobDataSchema).nonempty() }),
   z.object({ opcode: z.literal('detach'), blobIds: z.array(BlobIDSchema).nonempty() }),
-  z.object({ opcode: z.literal('set'), blobs: z.array(BlobDataSchema).nonempty() })
+  z.object({ opcode: z.literal('set'), blobs: z.array(BlobDataSchema).nonempty() }),
+  z.object({ opcode: z.literal('update'), blobs: z.array(UpdateBlobDataSchema).nonempty() })
 ])
 
 const BlobPatchEventSchema = BaseEventSchema.extend({
diff --git a/packages/shared/src/patch.ts b/packages/shared/src/patch.ts
index 8c04113ab2..7bdabb5fdc 100644
--- a/packages/shared/src/patch.ts
+++ b/packages/shared/src/patch.ts
@@ -28,7 +28,8 @@ import {
   PatchType,
   ReactionPatch,
   SocialID,
-  ThreadPatch
+  ThreadPatch,
+  BlobUpdateData
 } from '@hcengineering/communication-types'
 
 export function applyPatches (message: Message, patches: Patch[], allowedPatchTypes: PatchType[] = []): Message {
@@ -85,6 +86,8 @@ function patchBlobs (message: Message, patch: BlobPatch): Message {
     return detachBlobs(message, patch.data.blobIds)
   } else if (patch.data.operation === 'set') {
     return setBlobs(message, patch.data.blobs, patch.created, patch.creator)
+  } else if (patch.data.operation === 'update') {
+    return updateBlobs(message, patch.data.blobs)
   }
   return message
 }
@@ -149,6 +152,27 @@ function attachBlobs (message: Message, data: BlobData[], created: Date, creator
   }
 }
 
+function updateBlobs (message: Message, updates: BlobUpdateData[]): Message {
+  if (updates.length === 0) return message
+  const updatedBlobs = []
+  for (const blob of message.blobs) {
+    const update = updates.find((it) => it.blobId === blob.blobId)
+    if (update === undefined) {
+      updatedBlobs.push(blob)
+    } else {
+      updatedBlobs.push({
+        ...blob,
+        ...update
+      })
+    }
+  }
+
+  return {
+    ...message,
+    blobs: updatedBlobs
+  }
+}
+
 function detachBlobs (message: Message, blobIds: BlobID[]): Message {
   const blobs = message.blobs.filter((it) => !blobIds.includes(it.blobId))
   if (blobs.length === message.blobs.length) return message
diff --git a/packages/shared/src/processor.ts b/packages/shared/src/processor.ts
index f09e1fa917..0a96908bd3 100644
--- a/packages/shared/src/processor.ts
+++ b/packages/shared/src/processor.ts
@@ -27,6 +27,7 @@ import {
   PatchType,
   SetBlobsPatchData,
   SetLinkPreviewsPatchData,
+  UpdateBlobsPatchData,
   UpdateThreadPatchData
 } from '@hcengineering/communication-types'
 import {
@@ -43,6 +44,7 @@ import {
   RemoveNotificationContextEvent,
   SetBlobsOperation,
   SetLinkPreviewsOperation,
+  UpdateBlobsOperation,
   UpdateNotificationContextEvent,
   UpdateThreadOperation
 } from '@hcengineering/communication-sdk-types'
@@ -216,8 +218,8 @@ export class NotificationProcessor {
 }
 
 function blobOperationToPatchData (
-  operation: AttachBlobsOperation | DetachBlobsOperation | SetBlobsOperation
-): AttachBlobsPatchData | DetachBlobsPatchData | SetBlobsPatchData | undefined {
+  operation: AttachBlobsOperation | DetachBlobsOperation | SetBlobsOperation | UpdateBlobsOperation
+): AttachBlobsPatchData | DetachBlobsPatchData | SetBlobsPatchData | UpdateBlobsPatchData | undefined {
   if (operation.opcode === 'attach') {
     return {
       operation: 'attach',
@@ -233,6 +235,11 @@ function blobOperationToPatchData (
       operation: 'set',
       blobs: operation.blobs
     }
+  } else if (operation.opcode === 'update') {
+    return {
+      operation: 'update',
+      blobs: operation.blobs
+    }
   }
 
   return undefined
diff --git a/packages/types/src/message.ts b/packages/types/src/message.ts
index d60b1853f5..633a405ddd 100644
--- a/packages/types/src/message.ts
+++ b/packages/types/src/message.ts
@@ -151,7 +151,7 @@ export interface RemoveReactionPatchData {
 
 export interface BlobPatch extends BasePatch {
   type: PatchType.blob
-  data: AttachBlobsPatchData | DetachBlobsPatchData | SetBlobsPatchData
+  data: AttachBlobsPatchData | DetachBlobsPatchData | SetBlobsPatchData | UpdateBlobsPatchData
 }
 
 export interface AttachBlobsPatchData {
@@ -169,6 +169,11 @@ export interface SetBlobsPatchData {
   blobs: BlobData[]
 }
 
+export interface UpdateBlobsPatchData {
+  operation: 'update'
+  blobs: BlobUpdateData[]
+}
+
 export interface LinkPreviewPatch extends BasePatch {
   type: PatchType.linkPreview
   data: AttachLinkPreviewsPatchData | DetachLinkPreviewsPatchData | SetLinkPreviewsPatchData
@@ -233,6 +238,8 @@ export interface BlobData {
   metadata?: BlobMetadata
 }
 
+export type BlobUpdateData = { blobId: BlobID } & Partial<BlobData>
+
 export interface AttachedBlob extends BlobData {
   creator: SocialID
   created: Date