diff --git a/Pipfile b/Pipfile
index 8373ef95d..ae6c046cb 100644
--- a/Pipfile
+++ b/Pipfile
@@ -21,7 +21,7 @@ websockets = ">=7.0"
 aiodns = ">=1.1"            # aiodns speeds up DNS resolving
 cchardet = "*"              # cchardet is a faster replacement for chardet
 # --- Optional dependencies ------------------------------------------------------------------
-aiofile = ">=2.0.0"         # used by util/async_file.py
+aiofile = ">=3.9.0"         # used by util/async_file.py
 aiokafka = "*"              # pip install cryptofeed[kafka]
 aioredis = "*"              # pip install cryptofeed[redis]
 arctic = "*"                # pip install cryptofeed[arctic]