diff --git a/src/eventarc/eventarc-client-internal.ts b/src/eventarc/eventarc-client-internal.ts
index e265480024..ce02967c93 100644
--- a/src/eventarc/eventarc-client-internal.ts
+++ b/src/eventarc/eventarc-client-internal.ts
@@ -102,7 +102,7 @@ export class EventarcApiClient {
     }
     const request: HttpRequestConfig = {
       method: 'POST',
-      url: `${EVENTARC_API}/${channel}:publishEvents`,
+      url: `${this.getEventarcHost()}/${channel}:publishEvents`,
       data: JSON.stringify({ events }),
     };
     return this.sendRequest(request);
@@ -153,4 +153,8 @@ export class EventarcApiClient {
     const projectId = await this.getProjectId();
     return `projects/${projectId}/locations/${location}/channels/${channelId}`;
   }
+
+  private getEventarcHost(): string {
+    return process.env.CLOUD_EVENTARC_EMULATOR_HOST ?? EVENTARC_API;
+  }
 }