diff --git a/api/@ohos.net.socket.d.ts b/api/@ohos.net.socket.d.ts
index 1f6d090abdb7f37020ea51cea687dfe455b23727..9a3d0dc17eab668dda7fa74b550e6d794c171afa 100644
--- a/api/@ohos.net.socket.d.ts
+++ b/api/@ohos.net.socket.d.ts
@@ -545,12 +545,12 @@ declare namespace socket {
     /**
      * Certificate proving the identity of the client
      */
-    cert: string;
+    cert?: string;
 
     /**
      * Private key of client certificate
      */
-    key: string;
+    key?: string;
 
     /**
      * Password of the private key