diff --git a/src/metrics.ts b/src/metrics.ts
index 3b77320..5ff9650 100644
--- a/src/metrics.ts
+++ b/src/metrics.ts
@@ -1,4 +1,4 @@
-import { AsyncAPIDocumentInterface } from '@asyncapi/parser';
+import { AsyncAPIDocument } from '@smoya/multi-parser';
 
 export enum MetricType {
   Counter = 'counter',
@@ -7,7 +7,7 @@ export enum MetricType {
 
 export type MetricMetadata = { [key: string]: any };
 
-export function MetadataFromDocument(doc: AsyncAPIDocumentInterface, metadata: MetricMetadata = []): MetricMetadata {
+export function MetadataFromDocument(doc: AsyncAPIDocument, metadata: MetricMetadata = []): MetricMetadata {
   metadata['_asyncapi_version'] = doc.version();
   metadata['_asyncapi_servers'] = doc.allServers().all().length;
   metadata['_asyncapi_channels'] = doc.allChannels().all().length;
diff --git a/test/metrics.spec.ts b/test/metrics.spec.ts
index e34c869..0168e7d 100644
--- a/test/metrics.spec.ts
+++ b/test/metrics.spec.ts
@@ -1,4 +1,3 @@
-import exp from 'constants';
 import { MetadataFromDocument } from '../src/metrics';
 import { NewParser, AsyncAPIDocument } from '@smoya/multi-parser';