diff --git a/pkgs/development/python-modules/pyblu/default.nix b/pkgs/development/python-modules/pyblu/default.nix
index 0ffb06f06e64..74526592d833 100644
--- a/pkgs/development/python-modules/pyblu/default.nix
+++ b/pkgs/development/python-modules/pyblu/default.nix
@@ -4,29 +4,31 @@
   buildPythonPackage,
   fetchFromGitHub,
   lib,
+  lxml,
   poetry-core,
   pytest-asyncio,
   pytestCheckHook,
-  xmltodict,
 }:
 
 buildPythonPackage rec {
   pname = "pyblu";
-  version = "0.5.2";
+  version = "1.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "LouisChrist";
     repo = "pyblu";
     rev = "refs/tags/v${version}";
-    hash = "sha256-2gpd7oDDmjUVm7bEED2ZK/27a8XUITxU0ylRfxeg/qU=";
+    hash = "sha256-Ue6czsgeQjqPtbKmvvU+f49gKSzXJ8Yx9EzycUTtxE0=";
   };
 
   build-system = [ poetry-core ];
 
+  pythonRelaxDeps = [ "lxml" ];
+
   dependencies = [
     aiohttp
-    xmltodict
+    lxml
   ];
 
   pythonImportsCheck = [ "pyblu" ];