diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1f11a90c..65dd0d7d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,18 +1,10 @@
-aiocache
 aiofiles
 aiohttp
 beautifulsoup4
-bottle
 coverage
-falcon
-gunicorn
 httptools
-kyoukai
+flake8
 pytest
-recommonmark
-sphinx
-sphinx_rtd_theme
-tornado
 tox
 ujson
 uvloop