diff --git a/requirements.txt b/requirements.txt
index 088a526..fb58adb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ pytest-asyncio==0.10.0
 six==1.12.0
 pyee==5.0.0
 aiohttp==3.4.4
+isort==4.3.21