diff --git a/bin/wsdump.py b/bin/wsdump.py
index 14e7b79..51269a7 100755
--- a/bin/wsdump.py
+++ b/bin/wsdump.py
@@ -33,6 +33,8 @@ def parse_args():
                         dest="verbose",
                         help="set verbose mode. If set to 1, show opcode. "
                         "If set to 2, enable to trace  websocket module")
+    parser.add_argument("-n", "--nocert", action='store_true',
+                        help="Ignore invalid SSL cert")
 
     return parser.parse_args()
 
@@ -64,7 +66,10 @@ def main():
     console = InteractiveConsole()
     if args.verbose > 1:
         websocket.enableTrace(True)
-    ws = websocket.create_connection(args.url)
+    opts = {}
+    if (args.nocert):
+        opts = { "cert_reqs": websocket.ssl.CERT_NONE, "check_hostname": False }
+    ws = websocket.create_connection(args.url, sslopt=opts)
     print("Press Ctrl+C to quit")
 
     def recv():