diff --git a/src/api/teamsbotApi.ts b/src/api/teamsbotApi.ts
index e03994a..58b3732 100644
--- a/src/api/teamsbotApi.ts
+++ b/src/api/teamsbotApi.ts
@@ -335,7 +335,7 @@ export async function testAuth(instanceId: string, meetingUrl: string, botEmail?
   if (botEmail) payload.botEmail = botEmail;
   if (botPassword) payload.botPassword = botPassword;
   const response = await api.post(`/api/teamsbot/${instanceId}/test-auth`, payload, {
-    timeout: 300000, // 5 minutes — tests run sequentially
+    timeout: 900000, // 15 minutes — 5 browser variants run sequentially
   });
   return response.data;
 }