diff --git a/pyproject.toml b/pyproject.toml
index c0302d2302a..bea8e77ba04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,7 +76,8 @@ dynamic = ["readme", "version"]
 colorama = ["colorama>=0.4.3"]
 uvloop = ["uvloop>=0.15.2"]
 d = [
-  "aiohttp>=3.7.4",
+  "aiohttp>=3.7.4; sys_platform != 'win32' or implementation_name != 'pypy'",
+  "aiohttp>=3.7.4, !=3.9.0; sys_platform == 'win32' and implementation_name == 'pypy'",
 ]
 jupyter = [
   "ipython>=7.8.0",