diff --git a/src/modules/task-manager/repositories/attachment.repository.ts b/src/modules/task-manager/repositories/attachment.repository.ts
new file mode 100644
index 0000000..9fd3f26
--- /dev/null
+++ b/src/modules/task-manager/repositories/attachment.repository.ts
@@ -0,0 +1,47 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { TMAttachment } from '../entities/attachment.entity';
+
+@Injectable()
+export class AttachmentRepository {
+  constructor(
+    @InjectRepository(TMAttachment)
+    private readonly repository: Repository<TMAttachment>,
+  ) {}
+
+  findAll() {
+    return this.repository.find({
+      relations: ['task'],
+    });
+  }
+
+  findByTask(taskId: string) {
+    return this.repository.find({
+      where: { taskId },
+    });
+  }
+
+  findOneById(id: string) {
+    return this.repository.findOne({
+      where: { id },
+      relations: ['task'],
+    });
+  }
+
+  create(data: Partial<TMAttachment>) {
+    return this.repository.create(data);
+  }
+
+  save(attachment: TMAttachment) {
+    return this.repository.save(attachment);
+  }
+
+  update(id: string, data: Partial<TMAttachment>) {
+    return this.repository.update(id, data);
+  }
+
+  delete(id: string) {
+    return this.repository.delete(id);
+  }
+}
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