diff --git a/src/lib/metrics.test.ts b/src/lib/metrics.test.ts
index a4020332bb..4b0e4bbcf4 100644
--- a/src/lib/metrics.test.ts
+++ b/src/lib/metrics.test.ts
@@ -266,10 +266,10 @@ test('Should collect metrics for client sdk versions', async () => {
         'client_sdk_versions',
     );
     expect(metrics).toMatch(
-        /client_sdk_versions\{sdk_name="unleash-client-node",sdk_version="3\.2\.5"\,platformName=\"not-set\",platformVersion=\"not-set\",yggdrasilVersion=\"not-set\",specVersion=\"not-set\"} 3/,
+        /client_sdk_versions\{sdk_name="unleash-client-node",sdk_version="3\.2\.5"\,platform_name=\"not-set\",platform_version=\"not-set\",yggdrasil_version=\"not-set\",spec_version=\"not-set\"} 3/,
     );
     expect(metrics).toMatch(
-        /client_sdk_versions\{sdk_name="unleash-client-java",sdk_version="5\.0\.0"\,platformName=\"not-set\",platformVersion=\"not-set\",yggdrasilVersion=\"not-set\",specVersion=\"not-set\"} 3/,
+        /client_sdk_versions\{sdk_name="unleash-client-java",sdk_version="5\.0\.0"\,platform_name=\"not-set\",platform_version=\"not-set\",yggdrasil_version=\"not-set\",spec_version=\"not-set\"} 3/,
     );
     eventStore.emit(CLIENT_REGISTER, {
         sdkName: 'unleash-client-node',
@@ -279,7 +279,7 @@ test('Should collect metrics for client sdk versions', async () => {
         'client_sdk_versions',
     );
     expect(newmetrics).toMatch(
-        /client_sdk_versions\{sdk_name="unleash-client-node",sdk_version="3\.2\.5"\,platformName=\"not-set\",platformVersion=\"not-set\",yggdrasilVersion=\"not-set\",specVersion=\"not-set\"} 4/,
+        /client_sdk_versions\{sdk_name="unleash-client-node",sdk_version="3\.2\.5"\,platform_name=\"not-set\",platform_version=\"not-set\",yggdrasil_version=\"not-set\",spec_version=\"not-set\"} 4/,
     );
 });
 
diff --git a/src/lib/metrics.ts b/src/lib/metrics.ts
index cae55b2624..265ec2fdd8 100644
--- a/src/lib/metrics.ts
+++ b/src/lib/metrics.ts
@@ -248,10 +248,10 @@ export default class MetricsMonitor {
             labelNames: [
                 'sdk_name',
                 'sdk_version',
-                'platformName',
-                'platformVersion',
-                'yggdrasilVersion',
-                'specVersion',
+                'platform_name',
+                'platform_version',
+                'yggdrasil_version',
+                'spec_version',
             ],
         });
 
@@ -801,23 +801,23 @@ export default class MetricsMonitor {
                 clientSdkVersionUsage.increment({
                     sdk_name: heartbeatEvent.sdkName,
                     sdk_version: heartbeatEvent.sdkVersion,
-                    platformName:
+                    platform_name:
                         heartbeatEvent.metadata?.platformName ?? 'not-set',
-                    platformVersion:
+                    platform_version:
                         heartbeatEvent.metadata?.platformVersion ?? 'not-set',
-                    yggdrasilVersion:
+                    yggdrasil_version:
                         heartbeatEvent.metadata?.yggdrasilVersion ?? 'not-set',
-                    specVersion:
+                    spec_version:
                         heartbeatEvent.metadata?.specVersion ?? 'not-set',
                 });
             } else {
                 clientSdkVersionUsage.increment({
                     sdk_name: heartbeatEvent.sdkName,
                     sdk_version: heartbeatEvent.sdkVersion,
-                    platformName: 'not-set',
-                    platformVersion: 'not-set',
-                    yggdrasilVersion: 'not-set',
-                    specVersion: 'not-set',
+                    platform_name: 'not-set',
+                    platform_version: 'not-set',
+                    yggdrasil_version: 'not-set',
+                    spec_version: 'not-set',
                 });
             }
         });