diff --git a/extension/docs/IntegrationGuide.md b/extension/docs/IntegrationGuide.md
index 6185cc898..85d86ebfe 100644
--- a/extension/docs/IntegrationGuide.md
+++ b/extension/docs/IntegrationGuide.md
@@ -45,6 +45,7 @@ In order to make the extension module working, following parameters have to be p
 | `API_EXTENSION_BASE_URL` | URL of the Extension module. This URL will be called by CTP Extension endpoint. |
 | `ADYEN_API_KEY` | Go to [Account/Users](https://ca-test.adyen.com/ca/ca/config/users.shtml) - Select a user with `Web Service` User type - Generate New API Key (notice: in case you get `403 Forbidden` error from Adyen, try to regenerate the key). |
 | `ADYEN_MERCHANT_ACCOUNT` | Go to [Account/Merchant accounts](https://ca-test.adyen.com/ca/ca/accounts/show.shtml?accountTypeCode=MerchantAccount) and get the name in Acccount code. | |
+| `KEEP_ALIVE_TIMEOUT` | milliseconds to keep a socket alive after the last response ([Node.js docs](https://nodejs.org/dist/latest-v8.x/docs/api/http.html#http_server_keepalivetimeout)) |
 
 # Checkout steps
 In your shop, ensure the steps below are done:
diff --git a/extension/src/config/config.js b/extension/src/config/config.js
index a85f18e87..0d4cf50f3 100644
--- a/extension/src/config/config.js
+++ b/extension/src/config/config.js
@@ -4,7 +4,9 @@ function getEnvConfig () {
   return {
     port: process.env.PORT,
     logLevel: process.env.LOG_LEVEL,
-    apiExtensionBaseUrl: process.env.API_EXTENSION_BASE_URL
+    apiExtensionBaseUrl: process.env.API_EXTENSION_BASE_URL,
+    keepAliveTimeout: !Number.isNaN(process.env.KEEP_ALIVE_TIMEOUT) ? parseFloat(process.env.KEEP_ALIVE_TIMEOUT, 10)
+      : undefined
   }
 }
 
diff --git a/extension/src/init.js b/extension/src/init.js
index 4f5956ea8..ca7cb623e 100644
--- a/extension/src/init.js
+++ b/extension/src/init.js
@@ -6,6 +6,8 @@ const { ensureResources } = require('./config/init/ensure-resources')
 const port = parseInt(process.env.EXTENSION_PORT || 8080, 10)
 const logger = utils.getLogger()
 
+if (config.keepAliveTimeout !== undefined)
+  server.keepAliveTimeout = config.keepAliveTimeout
 init.listen(port, async () => {
   await ensureResources()
   logger.info(`Server running at http://127.0.0.1:${port}/`)
diff --git a/notification/docs/DevelopmentGuide.md b/notification/docs/DevelopmentGuide.md
index 2fbd23280..8733f834a 100644
--- a/notification/docs/DevelopmentGuide.md
+++ b/notification/docs/DevelopmentGuide.md
@@ -25,6 +25,7 @@ CTP_CLIENT_ID | commercetools client ID with `manage_types` and `manage_payments
 CTP_CLIENT_SECRET | commercetools client secret (you can get in the [commercetools Merchant Center](https://mc.commercetools.com)) | **YES** |
 LOG_LEVEL | bunyan log level (`trace`, `debug`, `info`, `warn`, `error`, `fatal`)| NO | `info`
 PORT | port on which the application will run | NO | 443
+KEEP_ALIVE_TIMEOUT | milliseconds to keep a socket alive after the last response ([Node.js docs](https://nodejs.org/dist/latest-v8.x/docs/api/http.html#http_server_keepalivetimeout)) | NO | Node.js default
 
 Don't forget to provide all required environment variables
 After setting all variables, execute command `npm run start` to run the module.
diff --git a/notification/docs/IntegrationGuide.md b/notification/docs/IntegrationGuide.md
index 5ea3b2a52..28b13cf96 100644
--- a/notification/docs/IntegrationGuide.md
+++ b/notification/docs/IntegrationGuide.md
@@ -37,6 +37,7 @@ CTP_CLIENT_ID | commercetools client ID (you can get in the commercetools Mercha
 CTP_CLIENT_SECRET | commercetools client secret (you can get in the commercetools Merchant Center) | **YES** |
 LOG_LEVEL | bunyan log level (`trace`, `debug`, `info`, `warn`, `error`, `fatal`)| NO | `info`
 PORT | port on which the application will run | NO | 443
+KEEP_ALIVE_TIMEOUT | milliseconds to keep a socket alive after the last response ([Node.js docs](https://nodejs.org/dist/latest-v8.x/docs/api/http.html#http_server_keepalivetimeout)) | NO | Node.js default
 
 Check out the deployment [Best Practices documentation](../../docs/BEST_PRACTICES.md)
 
diff --git a/notification/src/config/config.js b/notification/src/config/config.js
index 1dca78c93..90e4211f6 100644
--- a/notification/src/config/config.js
+++ b/notification/src/config/config.js
@@ -6,7 +6,9 @@ let config
 
 function getEnvConfig () {
   return {
-    logLevel: process.env.LOG_LEVEL
+    logLevel: process.env.LOG_LEVEL,
+    keepAliveTimeout: !Number.isNaN(process.env.KEEP_ALIVE_TIMEOUT) ? parseFloat(process.env.KEEP_ALIVE_TIMEOUT, 10)
+      : undefined
   }
 }
 
diff --git a/notification/src/init.js b/notification/src/init.js
index ca225ae74..21fdde1ec 100644
--- a/notification/src/init.js
+++ b/notification/src/init.js
@@ -8,6 +8,8 @@ const ctpClient = ctp.get(config)
 
 const PORT = process.env.PORT || 443
 
+if (config.keepAliveTimeout !== undefined)
+  server.keepAliveTimeout = config.keepAliveTimeout
 server.listen(PORT, async () => {
   await ensureInterfaceInteractionCustomType(ctpClient)
   logger.info(`Server started on ${PORT} port`)