diff --git a/lib/shared/src/sourcegraph-api/graphql/client.ts b/lib/shared/src/sourcegraph-api/graphql/client.ts
index 6a7b4cada10..5ab9788b6e4 100644
--- a/lib/shared/src/sourcegraph-api/graphql/client.ts
+++ b/lib/shared/src/sourcegraph-api/graphql/client.ts
@@ -810,7 +810,9 @@ export class SourcegraphGraphQLAPIClient {
 
     // make an anonymous request to the Testing API
     private fetchSourcegraphTestingAPI<T>(body: Record<string, any>): Promise<T | Error> {
-        const url = 'http://localhost:49300/.api/testLogging'
+        const url = `http://localhost:4930${
+            process.env.VITEST_POOL_ID ?? process.env.TEST_PARALLEL_INDEX ?? 0
+        }/.api/testLogging`
         const headers = new Headers({
             'Content-Type': 'application/json',
         })
diff --git a/lib/shared/src/sourcegraph-api/telemetry/MockServerTelemetryExporter.ts b/lib/shared/src/sourcegraph-api/telemetry/MockServerTelemetryExporter.ts
index 36b828c749b..b1fa7a96975 100644
--- a/lib/shared/src/sourcegraph-api/telemetry/MockServerTelemetryExporter.ts
+++ b/lib/shared/src/sourcegraph-api/telemetry/MockServerTelemetryExporter.ts
@@ -3,7 +3,9 @@ import type { TelemetryEventInput, TelemetryExporter } from '@sourcegraph/teleme
 import { logError } from '../../logger'
 import { isError } from '../../utils'
 
-const MOCK_URL = 'http://localhost:49300'
+const MOCK_URL = `http://localhost:4930${
+    process.env.VITEST_POOL_ID ?? process.env.TEST_PARALLEL_INDEX ?? 0
+}/`
 const ENDPOINT = '/.api/mockEventRecording'
 
 /**