diff --git a/jcpp-app-bootstrap/src/main/resources/app-service.yml b/jcpp-app-bootstrap/src/main/resources/app-service.yml
index a9b737b..e6af895 100644
--- a/jcpp-app-bootstrap/src/main/resources/app-service.yml
+++ b/jcpp-app-bootstrap/src/main/resources/app-service.yml
@@ -183,7 +183,6 @@ service:
       so-rcvbuf: "${SERVICE_PROTOCOL_GRPC_SO_RCVBUF:65535}"
       so-sndbuf: "${SERVICE_PROTOCOL_GRPC_SO_SNDBUF:65535}"
       no-delay: "${SERVICE_PROTOCOL_GRPC_NO_DELAY:true}"
-      user-thread-pool-size: "${SERVICE_PROTOCOL_GRPC_USER_THREAD_POOL_SIZE:1024}"
       max-inbound-message-size: "${SERVICE_PROTOCOL_GRPC_MAX_INBOUND_MESSAGE_SIZE:33554432}"
       max-concurrent-calls-per-connection: "${SERVICE_PROTOCOL_GRPC_MAX_CONCURRENT_CALLS_PER_CONNECTION:4}"
       client-max-keep-alive-time-sec: "${SERVICE_PROTOCOL_GRPC_CLIENT_MAX_KEEP_ALIVE_TIME_SEC:30}"