diff --git a/dev-dashboard/backend/src/server.ts b/dev-dashboard/backend/src/server.ts
index 2cae1fa486..c0fd777d37 100644
--- a/dev-dashboard/backend/src/server.ts
+++ b/dev-dashboard/backend/src/server.ts
@@ -88,6 +88,7 @@ function makeCallbacks(ws: { send: (data: string) => void; readyState: number })
 
 Bun.serve<WsData>({
   port: PORT,
+  idleTimeout: 255, // seconds; worktree removal can take >10s
 
   async fetch(req, server) {
     const url = new URL(req.url);