diff --git a/packages/kbn-mock-idp-plugin/server/plugin.ts b/packages/kbn-mock-idp-plugin/server/plugin.ts
index e24e7418cce62..20c115d80cf2c 100644
--- a/packages/kbn-mock-idp-plugin/server/plugin.ts
+++ b/packages/kbn-mock-idp-plugin/server/plugin.ts
@@ -16,7 +16,7 @@ import {
   parseSAMLAuthnRequest,
 } from '../common';
 
-export const plugin: PluginInitializer<void, void> = (): Plugin => ({
+export const plugin: PluginInitializer<void, void> = async (): Promise<Plugin> => ({
   setup(core) {
     core.http.resources.register(
       {