diff --git a/boards/default_src/micropython/origin/build/lib/tiny_webdb.py b/boards/default_src/micropython/origin/build/lib/tiny_webdb.py
index 2c513fe4..7ff1fde1 100644
--- a/boards/default_src/micropython/origin/build/lib/tiny_webdb.py
+++ b/boards/default_src/micropython/origin/build/lib/tiny_webdb.py
@@ -1,5 +1,16 @@
 import urequests as requests
-import urllib_parse
+
+
+def url_quote(s):
+    safe = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.-"
+    s = str(s)
+    res = bytearray()
+    for b in s.encode('utf-8'):
+        if b in safe:
+            res.append(b)
+        else:
+            res.extend(b'%' + b'%02X' % b)
+    return res.decode()
 
 
 class TinyWebDB:
@@ -23,14 +34,14 @@ class TinyWebDB:
         self._password = password
 
     def update(self, key, value):
-        key = urllib_parse.quote(str(key))
-        value = urllib_parse.quote(str(value))
+        key = url_quote(str(key))
+        value = url_quote(str(value))
         result = self._request("update", "tag={}&value={}".format(key, value))
         if "status" in result and result["status"] == "error":
             raise RuntimeError(result["message"])
     
     def get(self, key):
-        key = urllib_parse.quote(str(key))
+        key = url_quote(str(key))
         result = self._request("get", "tag={}".format(key))
         if "status" in result and result["status"] == "error":
             raise RuntimeError(result["message"])
@@ -45,14 +56,14 @@ class TinyWebDB:
     def search(self, no=1, count=1, tag='', dtype='both'):
         no = str(no)
         count = str(count)
-        tag = urllib_parse.quote(tag)
+        tag = url_quote(tag)
         result = self._request("search", "no={}&count={}&tag={}&type={}".format(no, count, tag, dtype))
         if "status" in result and result["status"] == "error":
             raise RuntimeError(result["message"])
         return result["data"]
 
     def delete(self, key):
-        key = urllib_parse.quote(str(key))
+        key = url_quote(str(key))
         result = self._request("delete", "tag={}".format(key))
         if "status" in result and result["status"] == "error":
             raise RuntimeError(result["message"])