diff --git a/pkgs/development/python-modules/langchain-deepseek/default.nix b/pkgs/development/python-modules/langchain-deepseek/default.nix
index e6978addf2e8..cd5683c5007f 100644
--- a/pkgs/development/python-modules/langchain-deepseek/default.nix
+++ b/pkgs/development/python-modules/langchain-deepseek/default.nix
@@ -4,7 +4,7 @@
   fetchFromGitHub,
 
   # build-system
-  pdm-backend,
+  hatchling,
 
   # dependencies
   langchain-core,
@@ -22,20 +22,20 @@
 
 buildPythonPackage rec {
   pname = "langchain-deepseek";
-  version = "0.1.4";
+  version = "1.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-deepseek==${version}";
-    hash = "sha256-lIlThVpyZF5osiCyYMO8kQUNtG5eUjXGZLdgRraj4Yc=";
+    hash = "sha256-sOJxtiYL/hgDEeWkCvHP3mfI4tmrBuQp1BYN5WX+npo=";
   };
 
   sourceRoot = "${src.name}/libs/partners/deepseek";
 
   build-system = [
-    pdm-backend
+    hatchling
   ];
 
   pythonRelaxDeps = [