diff --git a/src/upstreamproxy/relay.ts b/src/upstreamproxy/relay.ts
index 747c242..de5249f 100644
--- a/src/upstreamproxy/relay.ts
+++ b/src/upstreamproxy/relay.ts
@@ -453,3 +453,4 @@ function cleanupConn(st: ConnState | undefined): void {
   }
   st.ws = undefined
 }
+