diff --git a/pkgs/development/python-modules/hass-client/default.nix b/pkgs/development/python-modules/hass-client/default.nix
index 29b1a94965c2a..b11a877583f26 100644
--- a/pkgs/development/python-modules/hass-client/default.nix
+++ b/pkgs/development/python-modules/hass-client/default.nix
@@ -22,6 +22,11 @@ buildPythonPackage rec {
     hash = "sha256-FA3acaXLWcBMDsabLPxVk6EArSxcTAnmFeO1ixTXB1Q=";
   };
 
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail "1.0.0" "${version}"
+  '';
+
   build-system = [
     setuptools
   ];