diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3cb6011..4956c7f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -75,7 +75,7 @@ workflows:
                           only:
                               - develop
                               - feat/ai-workflows
-                              - pm-1955
+                              - pm-1957
 
 
             - 'build-prod':
diff --git a/src/api/ai-workflow/ai-workflow.controller.ts b/src/api/ai-workflow/ai-workflow.controller.ts
index 0a2a767..2d95944 100644
--- a/src/api/ai-workflow/ai-workflow.controller.ts
+++ b/src/api/ai-workflow/ai-workflow.controller.ts
@@ -26,6 +26,7 @@ import {
   UpdateAiWorkflowRunDto,
   CreateRunItemCommentDto,
   UpdateAiWorkflowRunItemDto,
+  UpdateRunItemCommentDto,
 } from '../../dto/aiWorkflow.dto';
 import { Scopes } from 'src/shared/decorators/scopes.decorator';
 import { UserRole } from 'src/shared/enums/userRole.enum';
@@ -40,6 +41,60 @@ import { User } from 'src/shared/decorators/user.decorator';
 export class AiWorkflowController {
   constructor(private readonly aiWorkflowService: AiWorkflowService) {}
 
+  @Patch('/:workflowId/runs/:runId/items/:itemId/comments/:commentId')
+  @Roles(
+    UserRole.Submitter,
+    UserRole.Copilot,
+    UserRole.ProjectManager,
+    UserRole.Admin,
+    UserRole.Reviewer,
+    UserRole.User,
+  )
+  @ApiOperation({ summary: 'Update a comment by id' })
+  @ApiParam({ name: 'workflowId', description: 'Workflow ID' })
+  @ApiParam({ name: 'runId', description: 'Run ID' })
+  @ApiParam({ name: 'itemId', description: 'Item ID' })
+  @ApiParam({ name: 'commentId', description: 'Comment ID' })
+  @ApiBody({
+    description: 'Partial comment data to update',
+    schema: {
+      type: 'object',
+      properties: {
+        content: { type: 'string' },
+        upVotes: { type: 'number' },
+        downVotes: { type: 'number' },
+      },
+      additionalProperties: false,
+    },
+  })
+  @ApiResponse({
+    status: 200,
+    description: 'Comment updated successfully.',
+  })
+  @ApiResponse({
+    status: 403,
+    description: 'Forbidden. User not comment creator.',
+  })
+  @ApiResponse({ status: 404, description: 'Comment not found.' })
+  async updateRunItemComment(
+    @Param('workflowId') workflowId: string,
+    @Param('runId') runId: string,
+    @Param('itemId') itemId: string,
+    @Param('commentId') commentId: string,
+    @Body(new ValidationPipe({ whitelist: true, transform: true }))
+    body: UpdateRunItemCommentDto,
+    @User() user: JwtUser,
+  ) {
+    return this.aiWorkflowService.updateCommentById(
+      user,
+      workflowId,
+      runId,
+      itemId,
+      commentId,
+      body,
+    );
+  }
+
   @Post('/:workflowId/runs/:runId/items/:itemId/comments')
   @Roles(
     UserRole.Submitter,
diff --git a/src/api/ai-workflow/ai-workflow.service.ts b/src/api/ai-workflow/ai-workflow.service.ts
index 5ead77c..165e7bb 100644
--- a/src/api/ai-workflow/ai-workflow.service.ts
+++ b/src/api/ai-workflow/ai-workflow.service.ts
@@ -14,6 +14,7 @@ import {
   UpdateAiWorkflowDto,
   UpdateAiWorkflowRunDto,
   UpdateAiWorkflowRunItemDto,
+  UpdateRunItemCommentDto,
 } from '../../dto/aiWorkflow.dto';
 import { ScorecardStatus } from 'src/dto/scorecard.dto';
 import { JwtUser } from 'src/shared/modules/global/jwt.service';
@@ -38,6 +39,93 @@ export class AiWorkflowService {
     this.logger = LoggerService.forRoot('AiWorkflowService');
   }
 
+  async updateCommentById(
+    user: JwtUser,
+    workflowId: string,
+    runId: string,
+    itemId: string,
+    commentId: string,
+    patchData: UpdateRunItemCommentDto,
+  ) {
+    this.logger.log(
+      `Updating comment ${commentId} for workflow ${workflowId}, run ${runId}, item ${itemId}`,
+    );
+
+    try {
+      const workflow = await this.prisma.aiWorkflow.findUnique({
+        where: { id: workflowId },
+      });
+      if (!workflow) {
+        throw new NotFoundException(
+          `Workflow with id ${workflowId} not found.`,
+        );
+      }
+
+      const run = await this.prisma.aiWorkflowRun.findUnique({
+        where: { id: runId },
+      });
+      if (!run || run.workflowId !== workflowId) {
+        throw new NotFoundException(
+          `Run with id ${runId} not found or does not belong to workflow ${workflowId}.`,
+        );
+      }
+
+      const item = await this.prisma.aiWorkflowRunItem.findUnique({
+        where: { id: itemId },
+      });
+      if (!item || item.workflowRunId !== runId) {
+        throw new NotFoundException(
+          `Item with id ${itemId} not found or does not belong to run ${runId}.`,
+        );
+      }
+
+      const comment = await this.prisma.aiWorkflowRunItemComment.findUnique({
+        where: { id: commentId },
+      });
+      if (!comment || comment.workflowRunItemId !== itemId) {
+        throw new NotFoundException(
+          `Comment with id ${commentId} not found or does not belong to item ${itemId}.`,
+        );
+      }
+
+      if (String(comment.userId) !== String(user.userId)) {
+        throw new ForbiddenException(
+          'User is not the creator of this comment and cannot update it.',
+        );
+      }
+
+      const allowedFields = ['content', 'upVotes', 'downVotes'];
+      const updateData: any = {};
+      for (const key of allowedFields) {
+        if (key in patchData) {
+          updateData[key] = patchData[key];
+        }
+      }
+
+      if (Object.keys(updateData).length === 0) {
+        throw new BadRequestException('No valid fields provided for update.');
+      }
+
+      const updatedComment = await this.prisma.aiWorkflowRunItemComment.update({
+        where: { id: commentId },
+        data: updateData,
+      });
+
+      return updatedComment;
+    } catch (error) {
+      if (
+        error instanceof NotFoundException ||
+        error instanceof ForbiddenException ||
+        error instanceof BadRequestException
+      ) {
+        throw error;
+      }
+
+      this.logger.error(`Failed to update comment ${commentId}`, error);
+      throw new InternalServerErrorException('Failed to update comment');
+    }
+  }
+
   async createRunItemComment(
     workflowId: string,
     runId: string,
diff --git a/src/dto/aiWorkflow.dto.ts b/src/dto/aiWorkflow.dto.ts
index 4b26dcb..98ae8e1 100644
--- a/src/dto/aiWorkflow.dto.ts
+++ b/src/dto/aiWorkflow.dto.ts
@@ -183,3 +183,32 @@ export class CreateRunItemCommentDto {
   @IsOptional()
   parentId?: string;
 }
+
+export class UpdateRunItemCommentDto {
+  @ApiProperty({ required: false })
+  @IsString()
+  @IsOptional()
+  content?: string;
+
+  @ApiProperty({ required: false })
+  @IsInt()
+  @IsOptional()
+  upVotes?: number;
+
+  @ApiProperty({ required: false })
+  @IsInt()
+  @IsOptional()
+  downVotes?: number;
+
+  @ApiHideProperty()
+  @IsEmpty({ message: 'parentId cannot be updated' })
+  parentId?: never;
+
+  @ApiHideProperty()
+  @IsEmpty({ message: 'userId cannot be updated' })
+  userId?: never;
+
+  @ApiHideProperty()
+  @IsEmpty({ message: 'workflowRunItemId cannot be updated' })
+  workflowRunItemId?: never;
+}