diff --git a/packages/backend/package.json b/packages/backend/package.json
index 243ebf2ce3..3fda0ad728 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -47,6 +47,7 @@
     "express": "^4.17.1",
     "express-promise-router": "^3.0.3",
     "knex": "^0.21.6",
+    "passport": "^0.4.1",
     "pg": "^8.3.0",
     "pg-connection-string": "^2.3.0",
     "sqlite3": "^5.0.0",
diff --git a/plugins/auth-backend/src/identity/IdentityClient.test.ts b/plugins/auth-backend/src/identity/IdentityClient.test.ts
index d3bb6aa9c5..4acaf335a4 100644
--- a/plugins/auth-backend/src/identity/IdentityClient.test.ts
+++ b/plugins/auth-backend/src/identity/IdentityClient.test.ts
@@ -23,10 +23,10 @@ import { PluginEndpointDiscovery } from '@backstage/backend-common';
 const server = setupServer();
 const mockBaseUrl = 'http://backstage:9191/i-am-a-mock-base';
 const discovery: PluginEndpointDiscovery = {
-  async getBaseUrl(_pluginId) {
+  async getBaseUrl() {
     return mockBaseUrl;
   },
-  async getExternalBaseUrl(_pluginId) {
+  async getExternalBaseUrl() {
     return mockBaseUrl;
   },
 };
diff --git a/plugins/auth-backend/src/lib/passport/BackstageIdentityStrategy.ts b/plugins/auth-backend/src/lib/passport/BackstageIdentityStrategy.ts
index 8f98583e55..a0ae4d4aac 100644
--- a/plugins/auth-backend/src/lib/passport/BackstageIdentityStrategy.ts
+++ b/plugins/auth-backend/src/lib/passport/BackstageIdentityStrategy.ts
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 import { Request } from 'express';
 import { JWK, JWT, JWKS } from 'jose';
 import { BackstageIdentity } from '../../providers';