diff --git a/openplugin/template/utils.py b/openplugin/template/utils.py
index 11ad9c9..ce98ebe 100644
--- a/openplugin/template/utils.py
+++ b/openplugin/template/utils.py
@@ -15,6 +15,7 @@
 # limitations under the License.
 
 """"""
+from jinja2 import Template
 
 
 def render_ROOT_URL(text: str, request=None) -> str:
@@ -23,5 +24,8 @@ def render_ROOT_URL(text: str, request=None) -> str:
     ROOT_URL = request.url_root
     if ROOT_URL.endswith("/"):
         ROOT_URL = ROOT_URL[:-1]
-    text = text.replace("{% ROOT_URL %}", ROOT_URL)
-    return text
+
+    template = Template(text)
+    rendered_text = template.render(ROOT_URL=ROOT_URL)
+    # text = text.replace("{{ROOT_URL}}", ROOT_URL)
+    return rendered_text
diff --git a/openplugin/utils/app_util.py b/openplugin/utils/app_util.py
index ea8dbd9..c902835 100644
--- a/openplugin/utils/app_util.py
+++ b/openplugin/utils/app_util.py
@@ -357,16 +357,16 @@ def write_error(sock, status_int, reason, mesg):
     html_error = (
         textwrap.dedent(
             """\
-    <html>
-      <head>
-        <title>%(reason)s</title>
-      </head>
-      <body>
-        <h1><p>%(reason)s</p></h1>
-        %(mesg)s
-      </body>
-    </html>
-    """
+        <html>
+          <head>
+            <title>%(reason)s</title>
+          </head>
+          <body>
+            <h1><p>%(reason)s</p></h1>
+            %(mesg)s
+          </body>
+        </html>
+        """
         )
         % {"reason": reason, "mesg": html.escape(mesg)}
     )
@@ -374,12 +374,12 @@ def write_error(sock, status_int, reason, mesg):
     http = (
         textwrap.dedent(
             """\
-    HTTP/1.1 %s %s\r
-    Connection: close\r
-    Content-Type: text/html\r
-    Content-Length: %d\r
-    \r
-    %s"""
+        HTTP/1.1 %s %s\r
+        Connection: close\r
+        Content-Type: text/html\r
+        Content-Length: %d\r
+        \r
+        %s"""
         )
         % (str(status_int), reason, len(html_error), html_error)
     )
diff --git a/plugins/QRcode_plugin/openapi.yaml b/plugins/QRcode_plugin/openapi.yaml
index c51f3b9..2ad3a3c 100644
--- a/plugins/QRcode_plugin/openapi.yaml
+++ b/plugins/QRcode_plugin/openapi.yaml
@@ -5,7 +5,7 @@ info:
   version: 1.0.0
 
 servers:
-  - url: {% ROOT_URL %}
+  - url: {{ROOT_URL}}
 
 paths:
   /qrcode_image:
diff --git a/plugins/ikun_plugin/openapi.yaml b/plugins/ikun_plugin/openapi.yaml
index 2d037db..e9e2122 100644
--- a/plugins/ikun_plugin/openapi.yaml
+++ b/plugins/ikun_plugin/openapi.yaml
@@ -5,7 +5,7 @@ info:
   version: 1.0.0
 
 servers:
-  - url: {% ROOT_URL %}
+  - url: {{ROOT_URL}}
 
 paths:
   /ikun_image:
diff --git a/plugins/todo_plugin/ai-plugin.json b/plugins/todo_plugin/ai-plugin.json
index 767095b..e914772 100644
--- a/plugins/todo_plugin/ai-plugin.json
+++ b/plugins/todo_plugin/ai-plugin.json
@@ -9,9 +9,9 @@
     },
     "api": {
       "type": "openapi",
-      "url": "{% ROOT_URL %}/openapi.yaml"
+      "url": "{{ROOT_URL}}/openapi.yaml"
     },
-    "logo_url": "{% ROOT_URL %}/logo.png",
+    "logo_url": "{{ROOT_URL}}/logo.png",
     "contact_email": "huangsy1314@163.com",
     "legal_info_url": "http://example.com/legal"
   }
diff --git a/plugins/todo_plugin/openapi.yaml b/plugins/todo_plugin/openapi.yaml
index 29ebe25..1d96dbb 100644
--- a/plugins/todo_plugin/openapi.yaml
+++ b/plugins/todo_plugin/openapi.yaml
@@ -4,7 +4,7 @@ info:
   description: A plugin that allows the user to create and manage a TODO list using ChatGPT. If you do not know the user's username, ask them first before making queries to the plugin. Otherwise, use the username "global".
   version: 'v1'
 servers:
-  - url: {% ROOT_URL %}
+  - url: {{ROOT_URL}}
 paths:
   /todos/{username}:
     get:
diff --git a/setup.py b/setup.py
index ef29cb6..0524a7c 100644
--- a/setup.py
+++ b/setup.py
@@ -38,6 +38,7 @@ def get_install_requires() -> list:
         "ifaddr",
         "numpy",
         "requests",
+        "jinja2",
     ]
 
 
