diff --git a/blivedm/clients/wbi.py b/blivedm/clients/wbi.py
deleted file mode 100644
index 75f7e01..0000000
--- a/blivedm/clients/wbi.py
+++ /dev/null
@@ -1,102 +0,0 @@
-import hashlib
-import logging
-import time
-import urllib.parse
-from typing import Any, Dict
-
-import aiohttp
-
-from ..utils import USER_AGENT
-
-logger = logging.getLogger("blivedm")
-
-UID_INIT_URL = "https://api.bilibili.com/x/web-interface/nav"
-
-WTS = "wts"
-W_RID = "w_rid"
-
-KEY_LENGTH = 32
-
-# fmt: off
-KEY_MAP = [
-    46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35,
-    27, 43, 5, 49, 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13,
-    37, 48, 7, 16, 24, 55, 40, 61, 26, 17, 0, 1, 60, 51, 30, 4,
-    22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11, 36, 20, 34, 44, 52,
-]
-# fmt: on
-
-INVALID_CHARS = ["!", "'", "(", ")", "*"]
-
-
-def filtered_string(s: str) -> str:
-    return "".join(c for c in s if c not in INVALID_CHARS)
-
-
-def extract_key_part(url: str) -> str:
-    slash = url.rfind("/")
-    if slash == -1:
-        raise ValueError("missing url slash")
-    dot = url[slash:].find(".")
-    if dot == -1:
-        raise ValueError("missing url dot")
-    return url[slash + 1 : slash + dot]
-
-
-def sign_content_with_key(content: str, key: str) -> str:
-    hasher = hashlib.md5()
-    hasher.update(f"{content}{key}".encode())
-    return hasher.hexdigest()
-
-
-async def get_wbi_key(session: aiohttp.ClientSession) -> str:
-    async with session.get(
-        UID_INIT_URL,
-        headers={"User-Agent": USER_AGENT},
-    ) as response:
-        data = await response.json()
-
-        wbi_img = data["data"]["wbi_img"]
-        img = extract_key_part(wbi_img["img_url"])
-        sub = extract_key_part(wbi_img["sub_url"])
-
-        if not img or not sub:
-            raise ValueError("missing wbi key")
-
-        full = img + sub
-        key_chars = ["\0"] * KEY_LENGTH
-        for i, index in enumerate(KEY_MAP[:KEY_LENGTH]):
-            key_chars[i] = full[index] if index < len(full) else "\0"
-
-        return "".join(key_chars)
-
-
-async def signed_query(
-    session: aiohttp.ClientSession, query: Dict[str, Any]
-) -> Dict[str, str]:
-    ts = str(int(time.time()))
-
-    filtered_query = []
-    for k, v in query.items():
-        filtered_query.append((k, filtered_string(str(v))))
-
-    filtered_query.append((WTS, ts))
-    filtered_query.sort(key=lambda x: x[0])
-
-    content = urllib.parse.urlencode(filtered_query)
-
-    try:
-        key = await get_wbi_key(session)
-    except (aiohttp.ClientConnectionError, aiohttp.ClientResponseError, ValueError):
-        logger.exception("get_wbi_key() failed:")
-        return query
-
-    query_sign = sign_content_with_key(content, key)
-
-    signed_query = {
-        **query,
-        WTS: ts,
-        W_RID: query_sign,
-    }
-
-    return signed_query
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 1955ef7..a170091 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,9 @@
-aiohttp~=3.9.0
-Brotli~=1.1.0
-yarl~=1.9.3
-redis~=5.0.2
-PyYAML~=6.0.1
-watchdog~=5.0.3
-requests~=2.32.3
-mysql-connector-python~=9.0.0
-schedule~=1.2.2
+aiohttp
+Brotli
+yarl
+redis
+PyYAML
+watchdog
+requests
+mysql
+schedule