diff --git a/pkgs/development/python-modules/halohome/default.nix b/pkgs/development/python-modules/halohome/default.nix
index 967b0b08a39f..b4d79a6a5a7e 100644
--- a/pkgs/development/python-modules/halohome/default.nix
+++ b/pkgs/development/python-modules/halohome/default.nix
@@ -31,6 +31,8 @@ buildPythonPackage rec {
     csrmesh
   ];
 
+  pythonRelaxDeps = [ "bleak" ];
+
   # Project has no tests
   doCheck = false;