diff --git a/pkgs/development/python-modules/aiohttp-middlewares/default.nix b/pkgs/development/python-modules/aiohttp-middlewares/default.nix
index f762840561a2..b31deb2b3c0d 100644
--- a/pkgs/development/python-modules/aiohttp-middlewares/default.nix
+++ b/pkgs/development/python-modules/aiohttp-middlewares/default.nix
@@ -25,6 +25,8 @@ buildPythonPackage rec {
     hash = "sha256-jUH1XhkytRwR76wUTsGQGu6m8s+SZ/GO114Lz9atwE8=";
   };
 
+  pythonRelaxDeps = [ "async-timeout" ];
+
   postPatch = ''
     sed -i "/addopts/d" pyproject.toml
   '';