diff --git a/plugin/http.py b/plugin/http.py
index 1af3035..fa14036 100644
--- a/plugin/http.py
+++ b/plugin/http.py
@@ -72,7 +72,7 @@ class BoswatchPlugin(PluginBase):
 
         loop = asyncio.get_event_loop()
 
-        future = asyncio.ensure_future(self.asyncRequests(urls))
+        future = asyncio.ensure_future(self._asyncRequests(urls))
         loop.run_until_complete(future)
 
     async def _asyncRequests(self, urls):
diff --git a/requirements.txt b/requirements.txt
index 5e215ff..0cca07d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,7 @@ mkdocs
 # for develope only
 pytest
 pytest-cov
+flake8==4.0.1
 pytest-flake8
 pytest-flakes
 pytest-randomly