diff --git a/packages/backend-plugin-api/api-report.md b/packages/backend-plugin-api/api-report.md
index 537e7a8a15..320e05dd3d 100644
--- a/packages/backend-plugin-api/api-report.md
+++ b/packages/backend-plugin-api/api-report.md
@@ -292,7 +292,7 @@ export interface ExtensionPointConfig {
 export interface HttpAuthService {
   // (undocumented)
   credentials<TAllowed extends keyof BackstagePrincipalTypes = 'unknown'>(
-    req: Request_2,
+    req: Request_2<any, any, any, any, any>,
     options?: {
       allow?: Array<TAllowed>;
       allowedAuthMethods?: Array<'token' | 'cookie'>;
diff --git a/packages/backend-plugin-api/src/services/definitions/HttpAuthService.ts b/packages/backend-plugin-api/src/services/definitions/HttpAuthService.ts
index bcc31880b3..44696bd777 100644
--- a/packages/backend-plugin-api/src/services/definitions/HttpAuthService.ts
+++ b/packages/backend-plugin-api/src/services/definitions/HttpAuthService.ts
@@ -20,7 +20,7 @@ import { BackstageCredentials, BackstagePrincipalTypes } from './AuthService';
 /** @public */
 export interface HttpAuthService {
   credentials<TAllowed extends keyof BackstagePrincipalTypes = 'unknown'>(
-    req: Request,
+    req: Request<any, any, any, any, any>,
     options?: {
       allow?: Array<TAllowed>;
       allowedAuthMethods?: Array<'token' | 'cookie'>;