diff --git a/pkgs/development/python-modules/langgraph-sdk/default.nix b/pkgs/development/python-modules/langgraph-sdk/default.nix
index 5cee300cf9de..a8a766a41ee8 100644
--- a/pkgs/development/python-modules/langgraph-sdk/default.nix
+++ b/pkgs/development/python-modules/langgraph-sdk/default.nix
@@ -18,14 +18,14 @@
 
 buildPythonPackage rec {
   pname = "langgraph-sdk";
-  version = "0.1.63";
+  version = "0.1.66";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langgraph";
     tag = "sdk==${version}";
-    hash = "sha256-V+JrLcumPQwN5hqfxyNc3OavPLlCFY5kXO81DSaAbeA=";
+    hash = "sha256-RmyKnCL0hPOEXau+BtcWfOVt7BCtCkWuAEdDOxUV20o=";
   };
 
   sourceRoot = "${src.name}/libs/sdk-py";