diff --git a/backend/src/controllers/learning-paths.ts b/backend/src/controllers/learning-paths.ts
index 65f3b457..1bd3f2b1 100644
--- a/backend/src/controllers/learning-paths.ts
+++ b/backend/src/controllers/learning-paths.ts
@@ -5,8 +5,8 @@ import learningPathService from '../services/learning-paths/learning-path-servic
 import { Language } from '@dwengo-1/common/util/language';
 import { BadRequestException } from '../exceptions/bad-request-exception.js';
 import { NotFoundException } from '../exceptions/not-found-exception.js';
-import { Group } from '../entities/assignments/group.entity';
-import { getAssignmentRepository, getGroupRepository } from '../data/repositories';
+import { Group } from '../entities/assignments/group.entity.js';
+import { getAssignmentRepository, getGroupRepository } from '../data/repositories.js';
 
 /**
  * Fetch learning paths based on query parameters.
diff --git a/backend/src/data/content/learning-path-repository.ts b/backend/src/data/content/learning-path-repository.ts
index 60f37948..67f08a03 100644
--- a/backend/src/data/content/learning-path-repository.ts
+++ b/backend/src/data/content/learning-path-repository.ts
@@ -1,10 +1,10 @@
 import { DwengoEntityRepository } from '../dwengo-entity-repository.js';
 import { LearningPath } from '../../entities/content/learning-path.entity.js';
 import { Language } from '@dwengo-1/common/util/language';
-import { LearningPathNode } from '../../entities/content/learning-path-node.entity';
+import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
 import { RequiredEntityData } from '@mikro-orm/core';
-import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity';
-import { EntityAlreadyExistsException } from '../../exceptions/entity-already-exists-exception';
+import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
+import { EntityAlreadyExistsException } from '../../exceptions/entity-already-exists-exception.js';
 
 export class LearningPathRepository extends DwengoEntityRepository<LearningPath> {
     public async findByHruidAndLanguage(hruid: string, language: Language): Promise<LearningPath | null> {
diff --git a/backend/src/services/learning-paths/learning-path-service.ts b/backend/src/services/learning-paths/learning-path-service.ts
index 730d7ba8..b20d8f97 100644
--- a/backend/src/services/learning-paths/learning-path-service.ts
+++ b/backend/src/services/learning-paths/learning-path-service.ts
@@ -3,14 +3,14 @@ import databaseLearningPathProvider from './database-learning-path-provider.js';
 import { envVars, getEnvVar } from '../../util/envVars.js';
 import { LearningObjectNode, LearningPath, LearningPathResponse } from '@dwengo-1/common/interfaces/learning-content';
 import { Language } from '@dwengo-1/common/util/language';
-import { Group } from '../../entities/assignments/group.entity';
-import { LearningPath as LearningPathEntity } from '../../entities/content/learning-path.entity';
-import { getLearningPathRepository } from '../../data/repositories';
-import { LearningPathNode } from '../../entities/content/learning-path-node.entity';
-import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity';
-import { base64ToArrayBuffer } from '../../util/base64-buffer-conversion';
+import { Group } from '../../entities/assignments/group.entity.js';
+import { LearningPath as LearningPathEntity } from '../../entities/content/learning-path.entity.js';
+import { getLearningPathRepository } from '../../data/repositories.js';
+import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
+import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
+import { base64ToArrayBuffer } from '../../util/base64-buffer-conversion.js';
 import { TeacherDTO } from '@dwengo-1/common/interfaces/teacher';
-import { mapToTeacher } from '../../interfaces/teacher';
+import { mapToTeacher } from '../../interfaces/teacher.js';
 import { Collection } from '@mikro-orm/core';
 
 const userContentPrefix = getEnvVar(envVars.UserContentPrefix);