diff --git a/pkgs/development/python-modules/aiofile/default.nix b/pkgs/development/python-modules/aiofile/default.nix
index 8122aa00c218..cab97b24e166 100644
--- a/pkgs/development/python-modules/aiofile/default.nix
+++ b/pkgs/development/python-modules/aiofile/default.nix
@@ -23,6 +23,10 @@ buildPythonPackage rec {
 
   build-system = [ setuptools ];
 
+  pythonRelaxDeps = [
+    "caio"
+  ];
+
   dependencies = [ caio ];
 
   nativeCheckInputs = [