diff --git a/requirements.txt b/requirements.txt
index c9dc3bf..53bc15a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ aiofiles==0.7.0
     # via fdiff (setup.py)
 aiohttp==3.7.4.post0
     # via fdiff (setup.py)
-async-timeout==3.0.1
+async-timeout==4.0.1
     # via aiohttp
 attrs==21.2.0
     # via aiohttp