diff --git a/pingora-load-balancing/src/lib.rs b/pingora-load-balancing/src/lib.rs
index 6a24c22..4922c46 100644
--- a/pingora-load-balancing/src/lib.rs
+++ b/pingora-load-balancing/src/lib.rs
@@ -70,6 +70,7 @@ impl Backend {
         Ok(Backend {
             addr: SocketAddr::Inet(addr),
             weight,
+            ext: Extensions::new(),
         })
         // TODO: UDS
     }