diff --git a/docker-compose.yml b/docker-compose.yml
index 8a2b103..8926c75 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,7 +10,7 @@ services:
       - STORAGE_CHANNEL_ID=${STORAGE_CHANNEL_ID}
       - BASE_URL=${BASE_URL}
       - DATABASE_URL=${DATABASE_URL}
-      - PORT=3000
+      - PORT=4000
       - NODE_ENV=production
       - LOG_LEVEL=info
       - TRUST_PROXY=true
@@ -46,7 +46,7 @@ services:
     healthcheck:
       test:
         - CMD-SHELL
-        - "bun -e \"fetch('http://localhost:3000/health').then(r => r.status === 200 ? process.exit(0) : process.exit(1))\""
+        - "bun -e \"fetch('http://localhost:4000/health').then(r => r.status === 200 ? process.exit(0) : process.exit(1))\""
       interval: 30s
       timeout: 10s
       retries: 3
@@ -59,7 +59,7 @@ services:
       - "traefik.http.routers.filedrop.entrypoints=websecure"
       - "traefik.http.routers.filedrop.tls=true"
       - "traefik.http.routers.filedrop.tls.certresolver=cloudflare"
-      - "traefik.http.services.filedrop.loadbalancer.server.port=3000"
+      - "traefik.http.services.filedrop.loadbalancer.server.port=4000"
       - "traefik.http.middlewares.filedrop-rl.ratelimit.average=300"
       - "traefik.http.middlewares.filedrop-rl.ratelimit.burst=100"
       - "traefik.http.middlewares.filedrop-rl.ratelimit.period=1m"
diff --git a/test/files.test.ts b/test/files.test.ts
index ff1e640..95b2df1 100644
--- a/test/files.test.ts
+++ b/test/files.test.ts
@@ -151,7 +151,7 @@ describe('File Route Handlers', () => {
     it('should return 404 if file is not found in database', async () => {
       mockFindByPublicId.mockImplementationOnce(async () => null);
 
-      const req = requestWithPublicId('http://localhost:3000/f/missing-id', 'missing-id');
+      const req = requestWithPublicId('http://localhost:4000/f/missing-id', 'missing-id');
       const res = await handleFileRedirect(req);
       expect(res.status).toBe(404);
       const body = await responseJson<ErrorBody>(res);
@@ -187,7 +187,7 @@ describe('File Route Handlers', () => {
         updatedAt: new Date('2026-05-18T00:00:00.000Z'),
       }));
 
-      const req = requestWithPublicId('http://localhost:3000/f/test-id', 'test-id');
+      const req = requestWithPublicId('http://localhost:4000/f/test-id', 'test-id');
       const res = await handleFileRedirect(req);
 
       expect(res.status).toBe(302);
@@ -201,7 +201,7 @@ describe('File Route Handlers', () => {
         throw new Error('DB Connection Error');
       });
 
-      const req = requestWithPublicId('http://localhost:3000/f/test-id', 'test-id');
+      const req = requestWithPublicId('http://localhost:4000/f/test-id', 'test-id');
       const res = await handleFileRedirect(req);
       expect(res.status).toBe(500);
       const body = await responseJson<ErrorBody>(res);
@@ -213,7 +213,7 @@ describe('File Route Handlers', () => {
     it('should return 404 if file is not found in database', async () => {
       mockFindByPublicId.mockImplementationOnce(async () => null);
 
-      const req = requestWithPublicId('http://localhost:3000/file/missing-id/info', 'missing-id');
+      const req = requestWithPublicId('http://localhost:4000/file/missing-id/info', 'missing-id');
       const res = await handleFileInfo(req);
       expect(res.status).toBe(404);
       const body = await responseJson<ErrorBody>(res);
@@ -251,7 +251,7 @@ describe('File Route Handlers', () => {
 
       mockFindByPublicId.mockImplementationOnce(async () => dbFile);
 
-      const req = requestWithPublicId('http://localhost:3000/file/test-id/info', 'test-id');
+      const req = requestWithPublicId('http://localhost:4000/file/test-id/info', 'test-id');
       const res = await handleFileInfo(req);
       expect(res.status).toBe(200);
       const body = await responseJson<FileInfoBody>(res);
@@ -273,7 +273,7 @@ describe('File Route Handlers', () => {
         throw new Error('DB Connection Error');
       });
 
-      const req = requestWithPublicId('http://localhost:3000/file/test-id/info', 'test-id');
+      const req = requestWithPublicId('http://localhost:4000/file/test-id/info', 'test-id');
       const res = await handleFileInfo(req);
       expect(res.status).toBe(500);
       const body = await responseJson<ErrorBody>(res);
diff --git a/test/health.test.ts b/test/health.test.ts
index 03fbf8d..194a804 100644
--- a/test/health.test.ts
+++ b/test/health.test.ts
@@ -19,7 +19,7 @@ describe('Health Route Handler', () => {
   });
 
   it('should return status 200 and ok when DB is healthy', async () => {
-    const req = new Request('http://localhost:3000/health');
+    const req = new Request('http://localhost:4000/health');
     const res = await handleHealth(req);
 
     expect(res.status).toBe(200);
@@ -30,7 +30,7 @@ describe('Health Route Handler', () => {
 
   it('should return status 500 and error details when DB health check fails', async () => {
     mockExecute.mockImplementationOnce(() => Promise.reject(new Error('DB Connection Failed')));
-    const req = new Request('http://localhost:3000/health');
+    const req = new Request('http://localhost:4000/health');
     const res = await handleHealth(req);
 
     expect(res.status).toBe(500);
diff --git a/test/s3-bucket-config.test.ts b/test/s3-bucket-config.test.ts
index 12b0231..2d74a6c 100644
--- a/test/s3-bucket-config.test.ts
+++ b/test/s3-bucket-config.test.ts
@@ -3,7 +3,7 @@ import { afterAll, beforeAll, describe, expect, it, mock } from 'bun:test';
 process.env.NODE_ENV = 'test';
 process.env.BOT_TOKEN = '123456:ABC-DEF';
 process.env.STORAGE_CHANNEL_ID = '-1001234567890';
-process.env.BASE_URL = 'http://localhost:3000';
+process.env.BASE_URL = 'http://localhost:4000';
 process.env.DATABASE_URL = 'postgresql://localhost/test';
 process.env.PORT = '3000';
 process.env.S3_ACCESS_KEY = 'filedrop-admin';
@@ -90,7 +90,7 @@ describe('S3 bucket configuration compatibility', () => {
   });
 
   it('returns VersioningConfiguration for path-style GetBucketVersioning', async () => {
-    const res = await handleS3Request(new Request('http://localhost:3000/gitea?versioning'));
+    const res = await handleS3Request(new Request('http://localhost:4000/gitea?versioning'));
     const body = await res.text();
 
     expect(res.status).toBe(200);
@@ -101,7 +101,7 @@ describe('S3 bucket configuration compatibility', () => {
 
   it('returns VersioningConfiguration for virtual-hosted GetBucketVersioning', async () => {
     const res = await handleS3Request(
-      new Request('http://gitea.localhost:3000/?versioning'),
+      new Request('http://gitea.localhost:4000/?versioning'),
       'gitea',
     );
     const body = await res.text();
diff --git a/test/upload.test.ts b/test/upload.test.ts
index 2c364bf..51d9fef 100644
--- a/test/upload.test.ts
+++ b/test/upload.test.ts
@@ -117,7 +117,7 @@ describe('Upload Route Handler', () => {
   });
 
   it('should reject unsupported content types with 400 status', async () => {
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       headers: {
         'content-type': 'text/plain',
@@ -132,7 +132,7 @@ describe('Upload Route Handler', () => {
   });
 
   it('should process JSON upload (base64) successfully', async () => {
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       headers: {
         'content-type': 'application/json',
@@ -160,7 +160,7 @@ describe('Upload Route Handler', () => {
   });
 
   it('should reject JSON upload without file key', async () => {
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       headers: {
         'content-type': 'application/json',
@@ -181,7 +181,7 @@ describe('Upload Route Handler', () => {
     const fileBlob = new Blob([realPhotoBuffer], { type: 'image/png' });
     formData.append('file', fileBlob, 'test_multi.png');
 
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       body: formData,
     });
@@ -214,7 +214,7 @@ describe('Upload Route Handler', () => {
     const fileBlob = new Blob([Buffer.from('multipart hello')], { type: 'text/plain' });
     formData.append('file', fileBlob, 'test_multi.txt');
 
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       body: formData,
     });
@@ -252,7 +252,7 @@ describe('Upload Route Handler', () => {
       updatedAt: new Date('2026-05-18T00:00:00.000Z'),
     };
 
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       headers: {
         'content-type': 'application/json',
@@ -281,7 +281,7 @@ describe('Upload Route Handler', () => {
   });
 
   it('should reject oversized request by Content-Length header', async () => {
-    const req = new Request('http://localhost:3000/api/upload', {
+    const req = new Request('http://localhost:4000/api/upload', {
       method: 'POST',
       headers: {
         'content-type': 'application/json',
diff --git a/test/web-api.test.ts b/test/web-api.test.ts
index 36dd255..dae68ca 100644
--- a/test/web-api.test.ts
+++ b/test/web-api.test.ts
@@ -58,7 +58,7 @@ describe('Web API v1', () => {
   beforeAll(async () => {
     process.env.BOT_TOKEN = '123456:ABC-DEF';
     process.env.STORAGE_CHANNEL_ID = '-1001234567890';
-    process.env.BASE_URL = 'http://localhost:3000';
+    process.env.BASE_URL = 'http://localhost:4000';
     process.env.DATABASE_URL = 'postgresql://localhost/test';
     const webApi = await import('../src/interfaces/http/controllers/web-api-controller');
     handleWebApiV1 = webApi.handleWebApiV1;
@@ -74,7 +74,7 @@ describe('Web API v1', () => {
   });
 
   it('should list buckets via GET /api/v1/buckets', async () => {
-    const req = new Request('http://localhost:3000/api/v1/buckets');
+    const req = new Request('http://localhost:4000/api/v1/buckets');
     const res = await handleWebApiV1(req);
     expect(res.status).toBe(200);
     const data = (await res.json()) as { buckets: { name: string }[] };
@@ -84,7 +84,7 @@ describe('Web API v1', () => {
   });
 
   it('should return 404 for unknown API path', async () => {
-    const req = new Request('http://localhost:3000/api/v1/unknown');
+    const req = new Request('http://localhost:4000/api/v1/unknown');
     const res = await handleWebApiV1(req);
     expect(res.status).toBe(404);
     const data = (await res.json()) as { error: string };
@@ -92,7 +92,7 @@ describe('Web API v1', () => {
   });
 
   it('should return 400 for invalid bucket name on create', async () => {
-    const req = new Request('http://localhost:3000/api/v1/buckets', {
+    const req = new Request('http://localhost:4000/api/v1/buckets', {
       method: 'POST',
       headers: { 'content-type': 'application/json' },
       body: JSON.stringify({ name: 'INVALID_NAME!' }),
@@ -117,7 +117,7 @@ describe('Web API v1', () => {
       },
     ];
 
-    const req = new Request('http://localhost:3000/api/v1/buckets/test-bucket/objects');
+    const req = new Request('http://localhost:4000/api/v1/buckets/test-bucket/objects');
     const res = await handleWebApiV1(req);
 
     expect(res.status).toBe(200);