diff --git a/pages/api/auth/login.ts b/pages/api/auth/login.ts
index 9bdfec22..7ff6267d 100644
--- a/pages/api/auth/login.ts
+++ b/pages/api/auth/login.ts
@@ -1,3 +1,4 @@
+import debug from 'debug';
 import { NextApiResponse } from 'next';
 import {
   ok,
@@ -13,6 +14,8 @@ import { secret } from 'lib/crypto';
 import { NextApiRequestQueryBody, User } from 'lib/types';
 import { setAuthKey } from 'lib/auth';
 
+const log = debug('umami:auth');
+
 export interface LoginRequestBody {
   username: string;
   password: string;
@@ -51,6 +54,8 @@ export default async (
       });
     }
 
+    log('Login failed:', { user, username, password });
+
     return unauthorized(res, 'message.incorrect-username-password');
   }