diff --git a/src/revisions/revisions.module.ts b/src/revisions/revisions.module.ts
index b55c8f04a..ec44e5d01 100644
--- a/src/revisions/revisions.module.ts
+++ b/src/revisions/revisions.module.ts
@@ -1,8 +1,11 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { Revision } from './revision.entity';
+import { RevisionsService } from './revisions.service';
 
 @Module({
   imports: [TypeOrmModule.forFeature([Revision])],
+  providers: [RevisionsService],
+  exports: [RevisionsService],
 })
 export class RevisionsModule {}
diff --git a/src/revisions/revisions.service.spec.ts b/src/revisions/revisions.service.spec.ts
new file mode 100644
index 000000000..b9685df92
--- /dev/null
+++ b/src/revisions/revisions.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { RevisionsService } from './revisions.service';
+
+describe('RevisionsService', () => {
+  let service: RevisionsService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [RevisionsService],
+    }).compile();
+
+    service = module.get<RevisionsService>(RevisionsService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/src/revisions/revisions.service.ts b/src/revisions/revisions.service.ts
new file mode 100644
index 000000000..4ffaa5822
--- /dev/null
+++ b/src/revisions/revisions.service.ts
@@ -0,0 +1,24 @@
+import { Injectable } from '@nestjs/common';
+import { RevisionMetadataDto } from './revision-metadata.dto';
+import { RevisionDto } from './revision.dto';
+
+@Injectable()
+export class RevisionsService {
+  getNoteRevisionMetadatas(noteIdOrAlias: string): RevisionMetadataDto[] {
+    return [
+      {
+        id: 'some-uuid',
+        updatedAt: new Date(),
+        length: 42,
+      },
+    ];
+  }
+
+  getNoteRevision(noteIdOrAlias: string, revisionId: string): RevisionDto {
+    return {
+      id: revisionId,
+      content: 'Foobar',
+      patch: 'barfoo',
+    };
+  }
+}