diff --git a/tests/21-ct-clean-up-nc.py b/tests/21-ct-clean-up-nc.py
index <HASH>..<HASH> 100644
--- a/tests/21-ct-clean-up-nc.py
+++ b/tests/21-ct-clean-up-nc.py
@@ -20,8 +20,8 @@ clientsocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 clientsocket.bind(('', localport))
 clientsocket.settimeout(timeout)
 clientsocket.connect((serverAddr, serverPort))
-clientsocket.send('GET '+httpPath+' HTTP/1.0\r\nHost: '+host+
-                  '\r\nUser-Agent: curl/7.38.0\r\nAccept: */*\r\n\r\n')
+clientsocket.send('GET '+httpPath+' HTTP/1.1\r\nHost: '+host+
+                  '\r\nConnection: close\r\nUser-Agent: curl/7.38.0\r\nAccept: */*\r\n\r\n')
 
 data = clientsocket.recv(4096)
 print(data)
tests: Use HTTP <I> instead of HTTP <I>

Envoy does not support HTTP <I>, so use HTTP <I> instead.