diff --git a/backend/src/apis/ConnectionAgents.ts b/backend/src/apis/ConnectionAgents.ts
new file mode 100644
index 000000000..8ce585242
--- /dev/null
+++ b/backend/src/apis/ConnectionAgents.ts
@@ -0,0 +1,5 @@
+import { Agent } from 'http'
+import { Agent as HttpsAgent } from 'https'
+
+export const httpAgent = new Agent({ keepAlive: true })
+export const httpsAgent = new HttpsAgent({ keepAlive: true })
diff --git a/backend/src/apis/HttpRequest.ts b/backend/src/apis/HttpRequest.ts
index 27578463a..2c7b8b5a1 100644
--- a/backend/src/apis/HttpRequest.ts
+++ b/backend/src/apis/HttpRequest.ts
@@ -7,10 +7,12 @@ import axios from 'axios'
 import { LogError } from '@/server/LogError'
 import { backendLogger as logger } from '@/server/logger'
 
+import { httpAgent, httpsAgent } from './ConnectionAgents'
+
 export const apiPost = async (url: string, payload: unknown): Promise<any> => {
   logger.trace('POST', url, payload)
   try {
-    const result = await axios.post(url, payload)
+    const result = await axios.post(url, payload, { httpAgent, httpsAgent })
     logger.trace('POST-Response', result)
     if (result.status !== 200) {
       throw new LogError('HTTP Status Error', result.status)
@@ -27,7 +29,7 @@ export const apiPost = async (url: string, payload: unknown): Promise<any> => {
 export const apiGet = async (url: string): Promise<any> => {
   logger.trace('GET: url=' + url)
   try {
-    const result = await axios.get(url)
+    const result = await axios.get(url, { httpAgent, httpsAgent })
     logger.trace('GET-Response', result)
     if (result.status !== 200) {
       throw new LogError('HTTP Status Error', result.status)
diff --git a/backend/src/apis/gms/GmsClient.ts b/backend/src/apis/gms/GmsClient.ts
index a59f7f6b5..9af018e1c 100644
--- a/backend/src/apis/gms/GmsClient.ts
+++ b/backend/src/apis/gms/GmsClient.ts
@@ -4,6 +4,7 @@
 /* eslint-disable @typescript-eslint/no-unsafe-argument */
 import axios from 'axios'
 
+import { httpAgent, httpsAgent } from '@/apis/ConnectionAgents'
 import { CONFIG } from '@/config'
 import { LogError } from '@/server/LogError'
 import { backendLogger as logger } from '@/server/logger'
@@ -126,9 +127,10 @@ export async function createGmsUser(apiKey: string, user: GmsUser): Promise<bool
         accept: 'application/json',
         language: 'en',
         timezone: 'UTC',
-        connection: 'keep-alive',
         authorization: apiKey,
       },
+      httpAgent,
+      httpsAgent,
     }
     try {
       const result = await axios.post(baseUrl.concat(service), user, config)
@@ -160,9 +162,10 @@ export async function updateGmsUser(apiKey: string, user: GmsUser): Promise<bool
         accept: 'application/json',
         language: 'en',
         timezone: 'UTC',
-        connection: 'keep-alive',
         authorization: apiKey,
       },
+      httpAgent,
+      httpsAgent,
     }
     try {
       const result = await axios.patch(baseUrl.concat(service), user, config)
@@ -197,9 +200,10 @@ export async function verifyAuthToken(
       accept: 'application/json',
       language: 'en',
       timezone: 'UTC',
-      connection: 'keep-alive',
       // authorization: apiKey,
     },
+    httpAgent,
+    httpsAgent,
   }
   try {
     const result = await axios.get(baseUrl.concat(service), config)
diff --git a/backend/src/apis/humhub/HumHubClient.ts b/backend/src/apis/humhub/HumHubClient.ts
index d2ccf8ec5..19485857e 100644
--- a/backend/src/apis/humhub/HumHubClient.ts
+++ b/backend/src/apis/humhub/HumHubClient.ts
@@ -20,7 +20,9 @@ export class HumHubClient {
 
   // eslint-disable-next-line no-useless-constructor, @typescript-eslint/no-empty-function
   private constructor() {
-    this.restClient = new RestClient('gradido-backend', CONFIG.HUMHUB_API_URL)
+    this.restClient = new RestClient('gradido-backend', CONFIG.HUMHUB_API_URL, undefined, {
+      keepAlive: true,
+    })
     logger.info('create rest client for', CONFIG.HUMHUB_API_URL)
   }