diff --git a/plugins/auth-backend-module-oauth2-proxy-provider/src/authenticator.ts b/plugins/auth-backend-module-oauth2-proxy-provider/src/authenticator.ts
index 3b94b6d404..de12eb4d4c 100644
--- a/plugins/auth-backend-module-oauth2-proxy-provider/src/authenticator.ts
+++ b/plugins/auth-backend-module-oauth2-proxy-provider/src/authenticator.ts
@@ -37,6 +37,7 @@ export const oauth2ProxyAuthenticator = createProxyAuthenticator({
       },
     };
   },
+  async initialize() {},
   async authenticate({ req }) {
     try {
       const authHeader = req.header(OAUTH2_PROXY_JWT_HEADER);
diff --git a/plugins/auth-node/src/proxy/types.ts b/plugins/auth-node/src/proxy/types.ts
index 9c1bc78dfd..0f52feaac4 100644
--- a/plugins/auth-node/src/proxy/types.ts
+++ b/plugins/auth-node/src/proxy/types.ts
@@ -21,7 +21,7 @@ import { ProfileTransform } from '../types';
 /** @public */
 export interface ProxyAuthenticator<TContext, TResult> {
   defaultProfileTransform: ProfileTransform<TResult>;
-  initialize?(ctx: { config: Config }): TContext;
+  initialize(ctx: { config: Config }): TContext;
   authenticate(
     options: { req: Request },
     ctx: TContext,