diff --git a/t/cli/test_tls_over_tcp.sh b/t/cli/test_tls_over_tcp.sh
index 5d378ce6a9ad..5f95f29db740 100755
--- a/t/cli/test_tls_over_tcp.sh
+++ b/t/cli/test_tls_over_tcp.sh
@@ -39,7 +39,13 @@ nginx_config:
 make run
 sleep 0.1
 
- ./utils/create-ssl.py t/certs/mtls_server.crt t/certs/mtls_server.key test.com
+curl http://127.0.0.1:9180/apisix/admin/ssls/1 \
+-H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
+{
+     "cert" : "'"$(cat t/certs/mtls_server.crt)"'",
+     "key": "'"$(cat t/certs/mtls_server.key)"'",
+     "snis": ["test.com"]
+}'
 
 curl -k -i http://127.0.0.1:9180/apisix/admin/stream_routes/1  \
     -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d \
diff --git a/utils/create-ssl.py b/utils/create-ssl.py
deleted file mode 100755
index e8a3daa33b73..000000000000
--- a/utils/create-ssl.py
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env python
-# coding: utf-8
-#
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You under the Apache License, Version 2.0
-# (the "License"); you may not use this file except in compliance with
-# the License.  You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import sys
-# sudo pip install requests
-import requests
-
-# Usage: ./create-ssl.py t.crt t.key test.com
-if len(sys.argv) <= 3:
-    print("bad argument")
-    sys.exit(1)
-with open(sys.argv[1]) as f:
-    cert = f.read()
-with open(sys.argv[2]) as f:
-    key = f.read()
-sni = sys.argv[3]
-api_key = "edd1c9f034335f136f87ad84b625c8f1"
-resp = requests.put("http://127.0.0.1:9180/apisix/admin/ssls/1", json={
-    "cert": cert,
-    "key": key,
-    "snis": [sni],
-}, headers={
-    "X-API-KEY": api_key,
-})
-print(resp.status_code)
-print(resp.text)