diff --git a/apps/server/src/collaboration/collaboration.module.ts b/apps/server/src/collaboration/collaboration.module.ts
index f11473ac..c4444d0b 100644
--- a/apps/server/src/collaboration/collaboration.module.ts
+++ b/apps/server/src/collaboration/collaboration.module.ts
@@ -10,6 +10,7 @@ import { TokenModule } from '../core/auth/token.module';
 import { HistoryProcessor } from './processors/history.processor';
 import { LoggerExtension } from './extensions/logger.extension';
 import { CollaborationHandler } from './collaboration.handler';
+import { CollabHistoryService } from './services/collab-history.service';
 
 @Module({
   providers: [
@@ -18,6 +19,7 @@ import { CollaborationHandler } from './collaboration.handler';
     PersistenceExtension,
     LoggerExtension,
     HistoryProcessor,
+    CollabHistoryService,
     CollaborationHandler,
   ],
   exports: [CollaborationGateway],
diff --git a/apps/server/src/collaboration/extensions/persistence.extension.ts b/apps/server/src/collaboration/extensions/persistence.extension.ts
index 72aa32de..4548b40c 100644
--- a/apps/server/src/collaboration/extensions/persistence.extension.ts
+++ b/apps/server/src/collaboration/extensions/persistence.extension.ts
@@ -26,6 +26,7 @@ import {
   IPageHistoryJob,
 } from '../../integrations/queue/constants/queue.interface';
 import { Page } from '@docmost/db/types/entity.types';
+import { CollabHistoryService } from '../services/collab-history.service';
 import {
   HISTORY_FAST_INTERVAL,
   HISTORY_FAST_THRESHOLD,
@@ -43,6 +44,7 @@ export class PersistenceExtension implements Extension {
     @InjectQueue(QueueName.GENERAL_QUEUE) private generalQueue: Queue,
     @InjectQueue(QueueName.AI_QUEUE) private aiQueue: Queue,
     @InjectQueue(QueueName.HISTORY_QUEUE) private historyQueue: Queue,
+    private readonly collabHistory: CollabHistoryService,
   ) {}
 
   async onLoadDocument(data: onLoadDocumentPayload) {
@@ -108,6 +110,7 @@ export class PersistenceExtension implements Extension {
     }
 
     let page: Page = null;
+    const editingUserIds = this.consumeContributors(documentName);
 
     try {
       await executeTx(this.db, async (trx) => {
@@ -130,13 +133,9 @@ export class PersistenceExtension implements Extension {
         let contributorIds = undefined;
         try {
           const existingContributors = page.contributorIds || [];
-          const contributorSet = this.contributors.get(documentName);
-          contributorSet.add(page.creatorId);
-          const newContributors = [...contributorSet];
           contributorIds = Array.from(
-            new Set([...existingContributors, ...newContributors]),
+            new Set([...existingContributors, ...editingUserIds, page.creatorId]),
           );
-          this.contributors.delete(documentName);
         } catch (err) {
           //this.logger.debug('Contributors error:' + err?.['message']);
         }
@@ -160,6 +159,8 @@ export class PersistenceExtension implements Extension {
     }
 
     if (page) {
+      await this.collabHistory.addContributors(pageId, editingUserIds);
+
       const mentions = extractMentions(tiptapJson);
       const pageMentions = extractPageMentions(mentions);
 
@@ -195,6 +196,14 @@ export class PersistenceExtension implements Extension {
     this.contributors.delete(documentName);
   }
 
+  private consumeContributors(documentName: string): string[] {
+    const contributorSet = this.contributors.get(documentName);
+    if (!contributorSet) return [];
+    const userIds = [...contributorSet];
+    this.contributors.delete(documentName);
+    return userIds;
+  }
+
   private async enqueuePageHistory(page: Page): Promise<void> {
     const pageAge = Date.now() - new Date(page.createdAt).getTime();
     const delay =
diff --git a/apps/server/src/collaboration/processors/history.processor.ts b/apps/server/src/collaboration/processors/history.processor.ts
index 6b28e127..985f0b3e 100644
--- a/apps/server/src/collaboration/processors/history.processor.ts
+++ b/apps/server/src/collaboration/processors/history.processor.ts
@@ -6,6 +6,7 @@ import { IPageHistoryJob } from '../../integrations/queue/constants/queue.interf
 import { PageHistoryRepo } from '@docmost/db/repos/page/page-history.repo';
 import { PageRepo } from '@docmost/db/repos/page/page.repo';
 import { isDeepStrictEqual } from 'node:util';
+import { CollabHistoryService } from '../services/collab-history.service';
 
 @Processor(QueueName.HISTORY_QUEUE)
 export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
@@ -14,6 +15,7 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
   constructor(
     private readonly pageHistoryRepo: PageHistoryRepo,
     private readonly pageRepo: PageRepo,
+    private readonly collabHistory: CollabHistoryService,
   ) {
     super();
   }
@@ -30,6 +32,7 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
 
       if (!page) {
         this.logger.warn(`Page ${pageId} not found, skipping history`);
+        await this.collabHistory.clearContributors(pageId);
         return;
       }
 
@@ -42,8 +45,19 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
         !lastHistory ||
         !isDeepStrictEqual(lastHistory.content, page.content)
       ) {
-        await this.pageHistoryRepo.saveHistory(page);
-        this.logger.debug(`History created for page: ${pageId}`);
+        const contributorIds =
+          await this.collabHistory.popContributors(pageId);
+
+        try {
+          await this.pageHistoryRepo.saveHistory(page, { contributorIds });
+          this.logger.debug(`History created for page: ${pageId}`);
+        } catch (err) {
+          await this.collabHistory.addContributors(
+            pageId,
+            contributorIds,
+          );
+          throw err;
+        }
       }
     } catch (err) {
       throw err;
diff --git a/apps/server/src/collaboration/services/collab-history.service.ts b/apps/server/src/collaboration/services/collab-history.service.ts
new file mode 100644
index 00000000..b7cf5086
--- /dev/null
+++ b/apps/server/src/collaboration/services/collab-history.service.ts
@@ -0,0 +1,30 @@
+import { Injectable } from '@nestjs/common';
+import { RedisService } from '@nestjs-labs/nestjs-ioredis';
+import type { Redis } from 'ioredis';
+
+const REDIS_KEY_PREFIX = 'history:contributors:';
+
+@Injectable()
+export class CollabHistoryService {
+  private readonly redis: Redis;
+
+  constructor(private readonly redisService: RedisService) {
+    this.redis = this.redisService.getOrThrow();
+  }
+
+  async addContributors(pageId: string, userIds: string[]): Promise<void> {
+    if (userIds.length === 0) return;
+    await this.redis.sadd(REDIS_KEY_PREFIX + pageId, ...userIds);
+  }
+
+  async popContributors(pageId: string): Promise<string[]> {
+    const key = REDIS_KEY_PREFIX + pageId;
+    const count = await this.redis.scard(key);
+    if (count === 0) return [];
+    return await this.redis.spop(key, count);
+  }
+
+  async clearContributors(pageId: string): Promise<void> {
+    await this.redis.del(REDIS_KEY_PREFIX + pageId);
+  }
+}
diff --git a/apps/server/src/database/migrations/20260209T120000-add-contributor-ids-to-page-history.ts b/apps/server/src/database/migrations/20260209T120000-add-contributor-ids-to-page-history.ts
new file mode 100644
index 00000000..4e50ad3a
--- /dev/null
+++ b/apps/server/src/database/migrations/20260209T120000-add-contributor-ids-to-page-history.ts
@@ -0,0 +1,15 @@
+import { type Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('page_history')
+    .addColumn('contributor_ids', sql`uuid[]`, (col) => col.defaultTo('{}'))
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('page_history')
+    .dropColumn('contributor_ids')
+    .execute();
+}
diff --git a/apps/server/src/database/repos/page/page-history.repo.ts b/apps/server/src/database/repos/page/page-history.repo.ts
index c61c7e88..aca38f45 100644
--- a/apps/server/src/database/repos/page/page-history.repo.ts
+++ b/apps/server/src/database/repos/page/page-history.repo.ts
@@ -9,8 +9,8 @@ import {
 } from '@docmost/db/types/entity.types';
 import { PaginationOptions } from '@docmost/db/pagination/pagination-options';
 import { executeWithCursorPagination } from '@docmost/db/pagination/cursor-pagination';
-import { jsonObjectFrom } from 'kysely/helpers/postgres';
-import { ExpressionBuilder } from 'kysely';
+import { jsonArrayFrom, jsonObjectFrom } from 'kysely/helpers/postgres';
+import { ExpressionBuilder, sql } from 'kysely';
 import { DB } from '@docmost/db/types/db';
 
 @Injectable()
@@ -25,6 +25,7 @@ export class PageHistoryRepo {
     'icon',
     'coverPhoto',
     'lastUpdatedById',
+    'contributorIds',
     'spaceId',
     'workspaceId',
     'createdAt',
@@ -44,6 +45,7 @@ export class PageHistoryRepo {
       .select(this.baseFields)
       .$if(opts?.includeContent, (qb) => qb.select('content'))
       .select((eb) => this.withLastUpdatedBy(eb))
+      .select((eb) => this.withContributors(eb))
       .where('id', '=', pageHistoryId)
       .executeTakeFirst();
   }
@@ -60,7 +62,10 @@ export class PageHistoryRepo {
       .executeTakeFirst();
   }
 
-  async saveHistory(page: Page, trx?: KyselyTransaction): Promise<void> {
+  async saveHistory(
+    page: Page,
+    opts?: { contributorIds?: string[]; trx?: KyselyTransaction },
+  ): Promise<void> {
     await this.insertPageHistory(
       {
         pageId: page.id,
@@ -70,10 +75,11 @@ export class PageHistoryRepo {
         icon: page.icon,
         coverPhoto: page.coverPhoto,
         lastUpdatedById: page.lastUpdatedById ?? page.creatorId,
+        contributorIds: opts?.contributorIds,
         spaceId: page.spaceId,
         workspaceId: page.workspaceId,
       },
-      trx,
+      opts?.trx,
     );
   }
 
@@ -82,6 +88,7 @@ export class PageHistoryRepo {
       .selectFrom('pageHistory')
       .select(this.baseFields)
       .select((eb) => this.withLastUpdatedBy(eb))
+      .select((eb) => this.withContributors(eb))
       .where('pageId', '=', pageId);
 
     return executeWithCursorPagination(query, {
@@ -120,4 +127,17 @@ export class PageHistoryRepo {
         .whereRef('users.id', '=', 'pageHistory.lastUpdatedById'),
     ).as('lastUpdatedBy');
   }
+
+  withContributors(eb: ExpressionBuilder<DB, 'pageHistory'>) {
+    return jsonArrayFrom(
+      eb
+        .selectFrom('users')
+        .select(['users.id', 'users.name', 'users.avatarUrl'])
+        .whereRef(
+          'users.id',
+          '=',
+          sql`ANY(${eb.ref('pageHistory.contributorIds')})`,
+        ),
+    ).as('contributors');
+  }
 }
diff --git a/apps/server/src/database/types/db.d.ts b/apps/server/src/database/types/db.d.ts
index a4197f4e..60b328ee 100644
--- a/apps/server/src/database/types/db.d.ts
+++ b/apps/server/src/database/types/db.d.ts
@@ -199,6 +199,7 @@ export interface GroupUsers {
 
 export interface PageHistory {
   content: Json | null;
+  contributorIds: Generated<string[] | null>;
   coverPhoto: string | null;
   createdAt: Generated<Timestamp>;
   icon: string | null;