diff --git a/pkgs/development/python-modules/poetry-core/default.nix b/pkgs/development/python-modules/poetry-core/default.nix
index 17a49034d20d..e3a0ffe1e75c 100644
--- a/pkgs/development/python-modules/poetry-core/default.nix
+++ b/pkgs/development/python-modules/poetry-core/default.nix
@@ -3,7 +3,6 @@
   stdenv,
   buildPythonPackage,
   fetchFromGitHub,
-  fetchpatch,
   pythonOlder,
   build,
   git,
@@ -16,26 +15,18 @@
 
 buildPythonPackage rec {
   pname = "poetry-core";
-  version = "1.9.0";
-  format = "pyproject";
+  version = "1.9.1";
+  pyproject = true;
 
   disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "python-poetry";
-    repo = pname;
-    rev = version;
-    hash = "sha256-vvwKbzGlvv2LTbXfJxQVM3nUXFGntgJxsku6cbRxCzw=";
+    repo = "poetry-core";
+    rev = "refs/tags/${version}";
+    hash = "sha256-L8lR9sUdRYqjkDCQ0XHXZm5X6xD40t1gxlGiovvb/+8=";
   };
 
-  patches = [
-    (fetchpatch {
-      name = "python-3.12.6.patch";
-      url = "https://github.com/python-poetry/poetry-core/commit/bd1ce358dec403c66e62176b11bfad77a51aacfd.patch";
-      hash = "sha256-dl2xTsn0nNAGJKNmgNPXlaeJOs1gNfDeQMJnD7EnKB4=";
-    })
-  ];
-
   nativeCheckInputs = [
     build
     git