diff --git a/src/judas_server/backend/backend_server.py b/src/judas_server/backend/backend_server.py
index 86cdcf1..10e5f7e 100644
--- a/src/judas_server/backend/backend_server.py
+++ b/src/judas_server/backend/backend_server.py
@@ -62,7 +62,7 @@ class BackendServer:
                 )
                 time.sleep(1)
 
-    def _send_ack(self, client: Client, target_id: str) -> None:
+    def send_ack(self, client: Client, target_id: str) -> None:
         """Send an ACK message to a client.
 
         Args: