diff --git a/package.json b/package.json
index 0a3fafd4..8322a757 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "unleash-client",
-  "version": "6.4.1",
+  "version": "6.4.2",
   "description": "Unleash Client for Node",
   "license": "Apache-2.0",
   "main": "./lib/index.js",
diff --git a/src/details.json b/src/details.json
index 351c181f..eb30b8ef 100644
--- a/src/details.json
+++ b/src/details.json
@@ -1 +1 @@
-{"name":"unleash-client-node","version":"6.4.1","sdkVersion":"unleash-client-node:6.4.1"}
\ No newline at end of file
+{"name":"unleash-client-node","version":"6.4.2","sdkVersion":"unleash-client-node:6.4.2"}
\ No newline at end of file
diff --git a/src/request.ts b/src/request.ts
index 1a607cb3..48cf3b64 100644
--- a/src/request.ts
+++ b/src/request.ts
@@ -101,7 +101,7 @@ export const buildHeaders = ({
     head['Unleash-Client-Spec'] = specVersionSupported;
   }
   const version = details.version;
-  head['x-unleash-sdk'] = `unleash-node@${version}`;
+  head['x-unleash-sdk'] = `unleash-client-node:${version}`;
   if (custom) {
     Object.assign(head, custom);
   }
diff --git a/src/test/metrics.test.ts b/src/test/metrics.test.ts
index 1b545aa4..3b3df301 100644
--- a/src/test/metrics.test.ts
+++ b/src/test/metrics.test.ts
@@ -130,12 +130,12 @@ test('should send correct custom and x-unleash headers', (t) =>
     const metricsEP = nockMetrics(url)
       .matchHeader('randomKey', randomKey)
       .matchHeader('x-unleash-appname', 'appName')
-      .matchHeader('x-unleash-sdk', /^unleash-node@(\d+\.\d+\.\d+)$/)
+      .matchHeader('x-unleash-sdk', /^unleash-client-node:\d+\.\d+\.\d+/)
       .matchHeader('x-unleash-connection-id', 'connectionId');
     const regEP = nockRegister(url)
       .matchHeader('randomKey', randomKey)
       .matchHeader('x-unleash-appname', 'appName')
-      .matchHeader('x-unleash-sdk', /^unleash-node@(\d+\.\d+\.\d+)$/)
+      .matchHeader('x-unleash-sdk', /^unleash-client-node:\d+\.\d+\.\d+/)
       .matchHeader('x-unleash-connection-id', 'connectionId');
 
     // @ts-expect-error
diff --git a/src/test/repository.test.ts b/src/test/repository.test.ts
index 7e31db0f..5204b534 100644
--- a/src/test/repository.test.ts
+++ b/src/test/repository.test.ts
@@ -191,7 +191,7 @@ test('should request with correct custom and x-unleash headers', (t) =>
       .matchHeader('randomKey', randomKey)
       .matchHeader('x-unleash-appname', appName)
       .matchHeader('x-unleash-connection-id', connectionId)
-      .matchHeader('x-unleash-sdk', /^unleash-node@(\d+\.\d+\.\d+)$/)
+      .matchHeader('x-unleash-sdk', /^unleash-client-node:\d+\.\d+\.\d+/)
       .persist()
       .get('/client/features')
       .reply(200, { features: [] }, { Etag: '12345-3' });
diff --git a/src/test/request.test.ts b/src/test/request.test.ts
index f131aa1d..967ec3a5 100644
--- a/src/test/request.test.ts
+++ b/src/test/request.test.ts
@@ -29,5 +29,5 @@ test('Correct headers should be included', (t) => {
   t.is(headers['UNLEASH-INSTANCEID'], 'instanceId');
   t.is(headers['x-unleash-connection-id'], 'connectionId');
   t.is(headers['x-unleash-appname'], 'myApp');
-  t.regex(headers['x-unleash-sdk'], /^unleash-node@(\d+\.\d+\.\d+)$/);
+  t.regex(headers['x-unleash-sdk'], /^unleash-client-node:\d+\.\d+\.\d+/);
 });