diff --git a/config/sys-prod.config b/config/sys-prod.config
index 57453a4..0671097 100644
--- a/config/sys-prod.config
+++ b/config/sys-prod.config
@@ -12,7 +12,7 @@
       {port, 443},
       {alpn, ["punchnet/1.0"]},
       {certfile, "fullchain.cer"},
-      {keyfile, "punchsky.com.key"},
+      {keyfile, "root.punchsky.com.key"},
       {limits, [
         {max_packet_size, 16384},
         %% 单位为秒