diff --git a/pkgs/development/python-modules/pysigma-backend-elasticsearch/default.nix b/pkgs/development/python-modules/pysigma-backend-elasticsearch/default.nix
index 11e237b26e6c..fa14fae70707 100644
--- a/pkgs/development/python-modules/pysigma-backend-elasticsearch/default.nix
+++ b/pkgs/development/python-modules/pysigma-backend-elasticsearch/default.nix
@@ -10,7 +10,7 @@
 
 buildPythonPackage rec {
   pname = "pysigma-backend-elasticsearch";
-  version = "1.0.1";
+  version = "1.0.3";
   format = "pyproject";
 
   disabled = pythonOlder "3.8";
@@ -19,9 +19,14 @@ buildPythonPackage rec {
     owner = "SigmaHQ";
     repo = "pySigma-backend-elasticsearch";
     rev = "refs/tags/v${version}";
-    hash = "sha256-7uaU4CYLqylVWsHPvQXQe5cATV6O5OgzkHQwbJhqkPo=";
+    hash = "sha256-NjMfJgM8YaJiQp8rucR099y4ZFG98XnxK1KZlnZb+MI=";
   };
 
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace " --cov=sigma --cov-report term --cov-report xml:cov.xml" ""
+  '';
+
   nativeBuildInputs = [
     poetry-core
   ];